diff --git a/docs/examples/dsl2-Copy2.ipynb b/docs/examples/dsl2-Copy2.ipynb
deleted file mode 100644
index 7c47de9e..00000000
--- a/docs/examples/dsl2-Copy2.ipynb
+++ /dev/null
@@ -1,822 +0,0 @@
-{
- "cells": [
-  {
-   "cell_type": "code",
-   "execution_count": 1,
-   "id": "8227bf9b-a386-4cb0-9eba-a7e258bf1d00",
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "%load_ext autoreload \n",
-    "%autoreload 2"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 2,
-   "id": "7c95d344-9406-4c66-978a-e7032df0967b",
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "import sys\n",
-    "sys.path.append(\"../..\")"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 3,
-   "id": "a8ea89f2-3d70-486c-9901-aeb4900169cb",
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "import pandas as pd\n",
-    "import numpy as np\n",
-    "import pipit as pp"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 4,
-   "id": "589e87fd-d8d1-4ddf-a426-b911410379c4",
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "trace = pp.Trace.from_otf2(\"../../pipit/tests/data/ping-pong-otf2/\")\n",
-    "pandas_df = trace.events[[\"Timestamp (ns)\", \"Name\", \"Event Type\", \"Process\", \"Thread\"]].copy()\n",
-    "pandas_df[\"Process\"] = pandas_df[\"Process\"].astype(int)\n",
-    "idx = pandas_df.groupby(['Process']).cumcount()\n",
-    "pandas_df[\"idx\"] = idx"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 5,
-   "id": "3867d2a2-ff3e-4c8c-9c09-46a167a0fde4",
-   "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "text/plain": [
-       "'pandas'"
-      ]
-     },
-     "execution_count": 5,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
-   "source": [
-    "pp.set_option(\"backend\", \"pandas\")\n",
-    "pp.get_option(\"backend\")"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 6,
-   "id": "156df562-4431-40b8-b6b0-b7cfbe6206d0",
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "TraceDataset (0 traces, 0 events)\n"
-     ]
-    }
-   ],
-   "source": [
-    "ds = pp.dsl2.TraceDataset()\n",
-    "ds.show()"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 7,
-   "id": "7fa7fe70-0c61-4503-9b27-3bae52d2f1c3",
-   "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "text/plain": [
-       "Event (rank=1, idx=0, thread=0, timestamp=0.0, event_type='Instant', name='ProgramBegin')"
-      ]
-     },
-     "execution_count": 7,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
-   "source": [
-    "# simulating a reader\n",
-    "row = pandas_df.iloc[0]\n",
-    "evt = pp.dsl2.Event(\n",
-    "    rank=row[\"Process\"],\n",
-    "    idx=row[\"idx\"],\n",
-    "    thread=row[\"Thread\"],\n",
-    "    timestamp=row[\"Timestamp (ns)\"],\n",
-    "    event_type=row[\"Event Type\"],\n",
-    "    name=row[\"Name\"],\n",
-    ")\n",
-    "evt"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 8,
-   "id": "5abbffd5-3246-4331-9a40-86b5a6eda0d7",
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "TraceDataset (1 trace, 0 events)\n"
-     ]
-    }
-   ],
-   "source": [
-    "ds.push_event(evt)\n",
-    "ds.show()"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 9,
-   "id": "bca1c384-0239-46b6-94d0-86439635eb80",
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "+--------+-------+----------+-------------+--------------+--------------+\n",
-      "|   rank |   idx |   thread |   timestamp | event_type   | name         |\n",
-      "|--------+-------+----------+-------------+--------------+--------------|\n",
-      "|      1 |     0 |        0 |           0 | Instant      | ProgramBegin |\n",
-      "+--------+-------+----------+-------------+--------------+--------------+\n",
-      "TraceDataset (1 trace, 1 event)\n"
-     ]
-    }
-   ],
-   "source": [
-    "ds.flush()\n",
-    "ds.show()"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 10,
-   "id": "2910c4d8-e40d-4683-b0d4-7943a6be34a6",
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "+--------+-------+----------+--------------------+--------------+-----------------------+\n",
-      "| rank   | idx   | thread   | timestamp          | event_type   | name                  |\n",
-      "|--------+-------+----------+--------------------+--------------+-----------------------|\n",
-      "| 1      | 0     | 0        | 0.0                | Instant      | ProgramBegin          |\n",
-      "| 1      | 1     | 0        | 30083.086937435106 | Enter        | int main(int, char**) |\n",
-      "| 1      | 2     | 0        | 40288.33150186851  | Enter        | MPI_Init              |\n",
-      "| 0      | 0     | 0        | 307730.9358165928  | Instant      | ProgramBegin          |\n",
-      "| 0      | 1     | 0        | 336979.73374932166 | Enter        | int main(int, char**) |\n",
-      "| ...    | ...   | ...      | ...                | ...          | ...                   |\n",
-      "| 1      | 57    | 0        | 199574793.63126454 | Leave        | MPI_Finalize          |\n",
-      "| 0      | 58    | 0        | 199575243.23094556 | Leave        | int main(int, char**) |\n",
-      "| 1      | 58    | 0        | 199576798.2158296  | Leave        | int main(int, char**) |\n",
-      "| 0      | 59    | 0        | 199603304.5511645  | Instant      | ProgramEnd            |\n",
-      "| 1      | 59    | 0        | 199604459.57369962 | Instant      | ProgramEnd            |\n",
-      "+--------+-------+----------+--------------------+--------------+-----------------------+\n",
-      "TraceDataset (2 traces, 120 events)\n"
-     ]
-    }
-   ],
-   "source": [
-    "for i in range(1, len(pandas_df)):\n",
-    "    row = pandas_df.iloc[i]\n",
-    "    evt = pp.dsl2.Event(\n",
-    "        rank=row[\"Process\"],\n",
-    "        idx=row[\"idx\"],\n",
-    "        thread=row[\"Thread\"],\n",
-    "        timestamp=row[\"Timestamp (ns)\"],\n",
-    "        event_type=row[\"Event Type\"],\n",
-    "        name=row[\"Name\"],\n",
-    "    )\n",
-    "    ds.push_event(evt)\n",
-    "\n",
-    "ds.flush()\n",
-    "ds.show()"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 11,
-   "id": "72fac6a1-0486-4ab5-b95d-af594afe0996",
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "+--------+-------+----------+-------------+--------------+---------------+\n",
-      "|   rank |   idx |   thread |   timestamp | event_type   | name          |\n",
-      "|--------+-------+----------+-------------+--------------+---------------|\n",
-      "|      1 |     0 |        0 |         0   | Instant      | ProgramBegin  |\n",
-      "|      1 |     1 |        0 |     30083.1 | Enter        | int main(int, |\n",
-      "|        |       |          |             |              | char**)       |\n",
-      "|      1 |     2 |        0 |     40288.3 | Enter        | MPI_Init      |\n",
-      "|      0 |     0 |        0 |    307731   | Instant      | ProgramBegin  |\n",
-      "|      0 |     1 |        0 |    336980   | Enter        | int main(int, |\n",
-      "|        |       |          |             |              | char**)       |\n",
-      "+--------+-------+----------+-------------+--------------+---------------+\n",
-      "TraceDataset (2 traces, 5 events)\n"
-     ]
-    }
-   ],
-   "source": [
-    "ds.head().show()"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 12,
-   "id": "3cba6972-052d-41df-a448-43f383fdf04e",
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "+--------+-------+----------+-------------+--------------+---------------+\n",
-      "|   rank |   idx |   thread |   timestamp | event_type   | name          |\n",
-      "|--------+-------+----------+-------------+--------------+---------------|\n",
-      "|      1 |    57 |        0 | 1.99575e+08 | Leave        | MPI_Finalize  |\n",
-      "|      0 |    58 |        0 | 1.99575e+08 | Leave        | int main(int, |\n",
-      "|        |       |          |             |              | char**)       |\n",
-      "|      1 |    58 |        0 | 1.99577e+08 | Leave        | int main(int, |\n",
-      "|        |       |          |             |              | char**)       |\n",
-      "|      0 |    59 |        0 | 1.99603e+08 | Instant      | ProgramEnd    |\n",
-      "|      1 |    59 |        0 | 1.99604e+08 | Instant      | ProgramEnd    |\n",
-      "+--------+-------+----------+-------------+--------------+---------------+\n",
-      "TraceDataset (2 traces, 5 events)\n"
-     ]
-    }
-   ],
-   "source": [
-    "ds.tail().show()"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 13,
-   "id": "c8a7099f-c446-4800-b55a-c263b742a814",
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "+--------+-------+----------+--------------------+--------------+-----------------------+\n",
-      "| rank   | idx   | thread   | timestamp          | event_type   | name                  |\n",
-      "|--------+-------+----------+--------------------+--------------+-----------------------|\n",
-      "| 0      | 0     | 0        | 307730.9358165928  | Instant      | ProgramBegin          |\n",
-      "| 0      | 1     | 0        | 336979.73374932166 | Enter        | int main(int, char**) |\n",
-      "| 0      | 2     | 0        | 346054.77444467926 | Enter        | MPI_Init              |\n",
-      "| 0      | 3     | 0        | 193643138.1741584  | Leave        | MPI_Init              |\n",
-      "| 1      | 3     | 0        | 193643835.4832178  | Leave        | MPI_Init              |\n",
-      "| ...    | ...   | ...      | ...                | ...          | ...                   |\n",
-      "| 1      | 57    | 0        | 199574793.63126454 | Leave        | MPI_Finalize          |\n",
-      "| 0      | 58    | 0        | 199575243.23094556 | Leave        | int main(int, char**) |\n",
-      "| 1      | 58    | 0        | 199576798.2158296  | Leave        | int main(int, char**) |\n",
-      "| 0      | 59    | 0        | 199603304.5511645  | Instant      | ProgramEnd            |\n",
-      "| 1      | 59    | 0        | 199604459.57369962 | Instant      | ProgramEnd            |\n",
-      "+--------+-------+----------+--------------------+--------------+-----------------------+\n",
-      "TraceDataset (2 traces, 117 events)\n"
-     ]
-    }
-   ],
-   "source": [
-    "ds.filter(\"timestamp > 1e5\").show()"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 14,
-   "id": "ebf8f71a-6a30-4c90-a9b6-ecb2215192f7",
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "+-------+----------+--------------------+--------------+-----------------------+\n",
-      "| idx   | thread   | timestamp          | event_type   | name                  |\n",
-      "|-------+----------+--------------------+--------------+-----------------------|\n",
-      "| 0     | 0        | 307730.9358165928  | Instant      | ProgramBegin          |\n",
-      "| 1     | 0        | 336979.73374932166 | Enter        | int main(int, char**) |\n",
-      "| 2     | 0        | 346054.77444467926 | Enter        | MPI_Init              |\n",
-      "| 3     | 0        | 193643138.1741584  | Leave        | MPI_Init              |\n",
-      "| 4     | 0        | 193651646.20379105 | Enter        | MPI_Comm_size         |\n",
-      "| ...   | ...      | ...                | ...          | ...                   |\n",
-      "| 55    | 0        | 199320512.07918367 | Leave        | MPI_Recv              |\n",
-      "| 56    | 0        | 199514778.2785141  | Enter        | MPI_Finalize          |\n",
-      "| 57    | 0        | 199573648.15437022 | Leave        | MPI_Finalize          |\n",
-      "| 58    | 0        | 199575243.23094556 | Leave        | int main(int, char**) |\n",
-      "| 59    | 0        | 199603304.5511645  | Instant      | ProgramEnd            |\n",
-      "+-------+----------+--------------------+--------------+-----------------------+\n",
-      "_Trace (rank=0, 60 events)\n"
-     ]
-    }
-   ],
-   "source": [
-    "ds.traces[0].show()"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 15,
-   "id": "bde23e54-6f1b-4620-a90a-903ba8294c27",
-   "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "text/plain": [
-       "Event (rank=0, idx=54, thread=0, timestamp=199319973.70504335, event_type='Instant', name='MpiRecv')"
-      ]
-     },
-     "execution_count": 15,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
-   "source": [
-    "ds.traces[0].loc[54]"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 16,
-   "id": "d1562ea5-8048-4c3c-8813-139ab83fcd33",
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "+-------+----------+-------------+--------------+----------+\n",
-      "|   idx |   thread |   timestamp | event_type   | name     |\n",
-      "|-------+----------+-------------+--------------+----------|\n",
-      "|    40 |        0 | 1.94911e+08 | Leave        | MPI_Send |\n",
-      "|    41 |        0 | 1.94912e+08 | Enter        | MPI_Recv |\n",
-      "|    42 |        0 | 1.95132e+08 | Instant      | MpiRecv  |\n",
-      "|    43 |        0 | 1.95132e+08 | Leave        | MPI_Recv |\n",
-      "|    44 |        0 | 1.95718e+08 | Enter        | MPI_Send |\n",
-      "|    45 |        0 | 1.95719e+08 | Instant      | MpiSend  |\n",
-      "|    46 |        0 | 1.9614e+08  | Leave        | MPI_Send |\n",
-      "|    47 |        0 | 1.9614e+08  | Enter        | MPI_Recv |\n",
-      "|    48 |        0 | 1.96584e+08 | Instant      | MpiRecv  |\n",
-      "|    49 |        0 | 1.96584e+08 | Leave        | MPI_Recv |\n",
-      "|    50 |        0 | 1.97613e+08 | Enter        | MPI_Send |\n",
-      "|    51 |        0 | 1.97614e+08 | Instant      | MpiSend  |\n",
-      "|    52 |        0 | 1.98506e+08 | Leave        | MPI_Send |\n",
-      "|    53 |        0 | 1.98507e+08 | Enter        | MPI_Recv |\n",
-      "|    54 |        0 | 1.9932e+08  | Instant      | MpiRecv  |\n",
-      "+-------+----------+-------------+--------------+----------+\n",
-      "_Trace (rank=0, 15 events)\n"
-     ]
-    }
-   ],
-   "source": [
-    "ds.traces[0].loc[40:54].show()"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 17,
-   "id": "857acd69-9a15-454c-96c3-bdc4ba8ef955",
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "+--------+-------+----------+--------------------+--------------+-----------------------+\n",
-      "| rank   | idx   | thread   | timestamp          | event_type   | name                  |\n",
-      "|--------+-------+----------+--------------------+--------------+-----------------------|\n",
-      "| 0      | 0     | 0        | 307730.9358165928  | Instant      | ProgramBegin          |\n",
-      "| 0      | 1     | 0        | 336979.73374932166 | Enter        | int main(int, char**) |\n",
-      "| 0      | 2     | 0        | 346054.77444467926 | Enter        | MPI_Init              |\n",
-      "| 0      | 3     | 0        | 193643138.1741584  | Leave        | MPI_Init              |\n",
-      "| 0      | 4     | 0        | 193651646.20379105 | Enter        | MPI_Comm_size         |\n",
-      "| ...    | ...   | ...      | ...                | ...          | ...                   |\n",
-      "| 0      | 55    | 0        | 199320512.07918367 | Leave        | MPI_Recv              |\n",
-      "| 0      | 56    | 0        | 199514778.2785141  | Enter        | MPI_Finalize          |\n",
-      "| 0      | 57    | 0        | 199573648.15437022 | Leave        | MPI_Finalize          |\n",
-      "| 0      | 58    | 0        | 199575243.23094556 | Leave        | int main(int, char**) |\n",
-      "| 0      | 59    | 0        | 199603304.5511645  | Instant      | ProgramEnd            |\n",
-      "+--------+-------+----------+--------------------+--------------+-----------------------+\n",
-      "TraceDataset (1 trace, 60 events)\n"
-     ]
-    }
-   ],
-   "source": [
-    "ds.loc[0].show()"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 18,
-   "id": "2eeb2fae-2dca-4742-90de-725d45d1e5bb",
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "+--------+-------+----------+--------------------+--------------+-----------------------+\n",
-      "| rank   | idx   | thread   | timestamp          | event_type   | name                  |\n",
-      "|--------+-------+----------+--------------------+--------------+-----------------------|\n",
-      "| 1      | 0     | 0        | 0.0                | Instant      | ProgramBegin          |\n",
-      "| 1      | 1     | 0        | 30083.086937435106 | Enter        | int main(int, char**) |\n",
-      "| 1      | 2     | 0        | 40288.33150186851  | Enter        | MPI_Init              |\n",
-      "| 0      | 0     | 0        | 307730.9358165928  | Instant      | ProgramBegin          |\n",
-      "| 0      | 1     | 0        | 336979.73374932166 | Enter        | int main(int, char**) |\n",
-      "| ...    | ...   | ...      | ...                | ...          | ...                   |\n",
-      "| 1      | 57    | 0        | 199574793.63126454 | Leave        | MPI_Finalize          |\n",
-      "| 0      | 58    | 0        | 199575243.23094556 | Leave        | int main(int, char**) |\n",
-      "| 1      | 58    | 0        | 199576798.2158296  | Leave        | int main(int, char**) |\n",
-      "| 0      | 59    | 0        | 199603304.5511645  | Instant      | ProgramEnd            |\n",
-      "| 1      | 59    | 0        | 199604459.57369962 | Instant      | ProgramEnd            |\n",
-      "+--------+-------+----------+--------------------+--------------+-----------------------+\n",
-      "TraceDataset (2 traces, 120 events)\n"
-     ]
-    }
-   ],
-   "source": [
-    "ds.loc[0:2].show()"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 19,
-   "id": "5e843a24-ff1a-44af-975a-15f83df89b07",
-   "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "text/plain": [
-       "Event (rank=0, idx=59, thread=0, timestamp=199603304.5511645, event_type='Instant', name='ProgramEnd')"
-      ]
-     },
-     "execution_count": 19,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
-   "source": [
-    "ds.loc[0, 59]"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 20,
-   "id": "2223f5fc-1433-443e-bd5f-1ae1c23faf28",
-   "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "text/plain": [
-       "120"
-      ]
-     },
-     "execution_count": 20,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
-   "source": [
-    "ds.map_traces(lambda trace: trace.count()).reduce(\"sum\")"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 21,
-   "id": "de60e9ad-5aff-4f08-9a83-9d6cd086bc06",
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "+-------+--------------------+\n",
-      "| idx   | result             |\n",
-      "|-------+--------------------|\n",
-      "| 0     | 307730.9358165928  |\n",
-      "| 1     | 336979.73374932166 |\n",
-      "| 2     | 346054.77444467926 |\n",
-      "| 3     | 193643138.1741584  |\n",
-      "| 4     | 193651646.20379105 |\n",
-      "| ...   | ...                |\n",
-      "| 55    | 199320512.07918367 |\n",
-      "| 56    | 199514778.2785141  |\n",
-      "| 57    | 199573648.15437022 |\n",
-      "| 58    | 199575243.23094556 |\n",
-      "| 59    | 199603304.5511645  |\n",
-      "+-------+--------------------+\n",
-      "DictLike (idx -> result, 60 items)\n"
-     ]
-    }
-   ],
-   "source": [
-    "ds.traces[0].map_events(lambda event: event.timestamp).show()"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 22,
-   "id": "ac27a0b1-26df-4d6d-b9ff-35b77bcfb7c3",
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "+-------+--------------------+\n",
-      "| idx   | result             |\n",
-      "|-------+--------------------|\n",
-      "| 0     | 307730.9358165928  |\n",
-      "| 1     | 336979.73374932166 |\n",
-      "| 2     | 346054.77444467926 |\n",
-      "| 3     | 193643138.1741584  |\n",
-      "| 4     | 193651646.20379105 |\n",
-      "| ...   | ...                |\n",
-      "| 55    | 199320512.07918367 |\n",
-      "| 56    | 199514778.2785141  |\n",
-      "| 57    | 199573648.15437022 |\n",
-      "| 58    | 199575243.23094556 |\n",
-      "| 59    | 199603304.5511645  |\n",
-      "+-------+--------------------+\n",
-      "DictLike (idx -> result, 60 items)\n"
-     ]
-    }
-   ],
-   "source": [
-    "ds.traces[0].map_events(lambda event: event.timestamp).show()"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 23,
-   "id": "7afbf369-7fe4-40c2-97c4-b80d339fcbcb",
-   "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "text/plain": [
-       "185373520.9350972"
-      ]
-     },
-     "execution_count": 23,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
-   "source": [
-    "ds.traces[0].map_events(lambda event: event.timestamp).reduce(\"mean\")"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 24,
-   "id": "44bd35aa-8763-4d11-808b-b42e10a95e81",
-   "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "text/plain": [
-       "11122246941.50224"
-      ]
-     },
-     "execution_count": 24,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
-   "source": [
-    "ds.map_traces(lambda trace: trace.map_events(lambda event: event.timestamp).reduce(\"sum\")).reduce(\"mean\")"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 25,
-   "id": "8821997b-1154-4e61-93c9-4cca21b948eb",
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "+--------+----------+\n",
-      "|   rank |   result |\n",
-      "|--------+----------|\n",
-      "|      1 |       60 |\n",
-      "|      0 |       60 |\n",
-      "+--------+----------+\n",
-      "DictLike (rank -> result, 2 items)\n"
-     ]
-    }
-   ],
-   "source": [
-    "ds.map_traces(lambda trace: trace.count()).show()"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 26,
-   "id": "8aa72310-728d-42c9-9e6a-dcc13f9a0299",
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "# matching_evt = np.full(ds.traces[0].count(), np.nan)\n",
-    "# matching_ts = np.full(ds.traces[0].count(), np.nan)\n",
-    "\n",
-    "# stack = []\n",
-    "\n",
-    "# for event in ds.traces[0].iter_events():\n",
-    "#     if event.event_type == \"Enter\":\n",
-    "#         stack.append((event.idx, event.timestamp))\n",
-    "#     elif event.event_type == \"Leave\":\n",
-    "#         enter_idx, enter_ts = stack.pop()\n",
-    "#         matching_evt[enter_idx] = event.idx\n",
-    "#         matching_ts[enter_idx] = event.timestamp\n",
-    "#         matching_evt[event.idx] = enter_idx\n",
-    "#         matching_ts[event.idx] = enter_ts\n",
-    "\n",
-    "# ds.traces[0].add_column(\"matching_evt\", matching_evt)\n",
-    "# ds.traces[0].add_column(\"matching_ts\", matching_ts)\n",
-    "\n",
-    "# del matching_evt\n",
-    "# del matching_ts\n",
-    "\n",
-    "# ds.traces[0].show()"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 27,
-   "id": "06005b18-cc7e-4363-9264-ea0c50142575",
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "+--------+-------+----------+--------------------+--------------+-----------------------+\n",
-      "| rank   | idx   | thread   | timestamp          | event_type   | name                  |\n",
-      "|--------+-------+----------+--------------------+--------------+-----------------------|\n",
-      "| 1      | 0     | 0        | 0.0                | Instant      | ProgramBegin          |\n",
-      "| 1      | 1     | 0        | 30083.086937435106 | Enter        | int main(int, char**) |\n",
-      "| 1      | 2     | 0        | 40288.33150186851  | Enter        | MPI_Init              |\n",
-      "| 0      | 0     | 0        | 307730.9358165928  | Instant      | ProgramBegin          |\n",
-      "| 0      | 1     | 0        | 336979.73374932166 | Enter        | int main(int, char**) |\n",
-      "| ...    | ...   | ...      | ...                | ...          | ...                   |\n",
-      "| 1      | 57    | 0        | 199574793.63126454 | Leave        | MPI_Finalize          |\n",
-      "| 0      | 58    | 0        | 199575243.23094556 | Leave        | int main(int, char**) |\n",
-      "| 1      | 58    | 0        | 199576798.2158296  | Leave        | int main(int, char**) |\n",
-      "| 0      | 59    | 0        | 199603304.5511645  | Instant      | ProgramEnd            |\n",
-      "| 1      | 59    | 0        | 199604459.57369962 | Instant      | ProgramEnd            |\n",
-      "+--------+-------+----------+--------------------+--------------+-----------------------+\n",
-      "TraceDataset (2 traces, 120 events)\n"
-     ]
-    }
-   ],
-   "source": [
-    "ds.show()"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 28,
-   "id": "3312389e-71c4-411d-b8e0-9d8c14367359",
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "analyzer = pp.dsl2.Analyzer(ds)"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 29,
-   "id": "008cdda4-7d70-4501-9f43-55c6b465e1f2",
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "analyzer._match_events()"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 30,
-   "id": "c5d1a502-d728-4831-a608-9577c2c843b8",
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "+--------+-------+----------+--------------------+--------------+-----------------------+----------------+--------------------+\n",
-      "| rank   | idx   | thread   | timestamp          | event_type   | name                  | matching_evt   | matching_ts        |\n",
-      "|--------+-------+----------+--------------------+--------------+-----------------------+----------------+--------------------|\n",
-      "| 1      | 0     | 0        | 0.0                | Instant      | ProgramBegin          | -1             | nan                |\n",
-      "| 1      | 1     | 0        | 30083.086937435106 | Enter        | int main(int, char**) | 58             | 199576798.2158296  |\n",
-      "| 1      | 2     | 0        | 40288.33150186851  | Enter        | MPI_Init              | 3              | 193643835.4832178  |\n",
-      "| 0      | 0     | 0        | 307730.9358165928  | Instant      | ProgramBegin          | -1             | nan                |\n",
-      "| 0      | 1     | 0        | 336979.73374932166 | Enter        | int main(int, char**) | 58             | 199575243.23094556 |\n",
-      "| ...    | ...   | ...      | ...                | ...          | ...                   | ...            | ...                |\n",
-      "| 1      | 57    | 0        | 199574793.63126454 | Leave        | MPI_Finalize          | 56             | 199529686.66029385 |\n",
-      "| 0      | 58    | 0        | 199575243.23094556 | Leave        | int main(int, char**) | 1              | 336979.73374932166 |\n",
-      "| 1      | 58    | 0        | 199576798.2158296  | Leave        | int main(int, char**) | 1              | 30083.086937435106 |\n",
-      "| 0      | 59    | 0        | 199603304.5511645  | Instant      | ProgramEnd            | -1             | nan                |\n",
-      "| 1      | 59    | 0        | 199604459.57369962 | Instant      | ProgramEnd            | -1             | nan                |\n",
-      "+--------+-------+----------+--------------------+--------------+-----------------------+----------------+--------------------+\n",
-      "TraceDataset (2 traces, 120 events)\n"
-     ]
-    }
-   ],
-   "source": [
-    "analyzer.ds.show()"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 31,
-   "id": "ada9f092-fcbc-4f90-bb36-c22e8353d6fe",
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "analyzer._match_caller_callee()"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 32,
-   "id": "6c856475-0ea0-4acb-8c2b-2b1bfcdb5391",
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "+--------+-------+----------+--------------------+--------------+-----------------------+----------------+--------------------+---------+-------+--------------------------+\n",
-      "| rank   | idx   | thread   | timestamp          | event_type   | name                  | matching_evt   | matching_ts        | depth   | par   | children                 |\n",
-      "|--------+-------+----------+--------------------+--------------+-----------------------+----------------+--------------------+---------+-------+--------------------------|\n",
-      "| 1      | 0     | 0        | 0.0                | Instant      | ProgramBegin          | -1             | nan                | 0       | -1    | []                       |\n",
-      "| 1      | 1     | 0        | 30083.086937435106 | Enter        | int main(int, char**) | 58             | 199576798.2158296  | 0       | -1    | [2, 4, 6, 8, 11, 14, 17, |\n",
-      "|        |       |          |                    |              |                       |                |                    |         |       | 20, 23, 26, 29, 32, 35,  |\n",
-      "|        |       |          |                    |              |                       |                |                    |         |       | 38, 41, 44, 47, 50, 53,  |\n",
-      "|        |       |          |                    |              |                       |                |                    |         |       | 56]                      |\n",
-      "| 1      | 2     | 0        | 40288.33150186851  | Enter        | MPI_Init              | 3              | 193643835.4832178  | 1       | 1     | []                       |\n",
-      "| 0      | 0     | 0        | 307730.9358165928  | Instant      | ProgramBegin          | -1             | nan                | 0       | -1    | []                       |\n",
-      "| 0      | 1     | 0        | 336979.73374932166 | Enter        | int main(int, char**) | 58             | 199575243.23094556 | 0       | -1    | [2, 4, 6, 8, 11, 14, 17, |\n",
-      "|        |       |          |                    |              |                       |                |                    |         |       | 20, 23, 26, 29, 32, 35,  |\n",
-      "|        |       |          |                    |              |                       |                |                    |         |       | 38, 41, 44, 47, 50, 53,  |\n",
-      "|        |       |          |                    |              |                       |                |                    |         |       | 56]                      |\n",
-      "| ...    | ...   | ...      | ...                | ...          | ...                   | ...            | ...                | ...     | ...   | ...                      |\n",
-      "| 1      | 57    | 0        | 199574793.63126454 | Leave        | MPI_Finalize          | 56             | 199529686.66029385 | 0       | -1    | []                       |\n",
-      "| 0      | 58    | 0        | 199575243.23094556 | Leave        | int main(int, char**) | 1              | 336979.73374932166 | 0       | -1    | []                       |\n",
-      "| 1      | 58    | 0        | 199576798.2158296  | Leave        | int main(int, char**) | 1              | 30083.086937435106 | 0       | -1    | []                       |\n",
-      "| 0      | 59    | 0        | 199603304.5511645  | Instant      | ProgramEnd            | -1             | nan                | 0       | -1    | []                       |\n",
-      "| 1      | 59    | 0        | 199604459.57369962 | Instant      | ProgramEnd            | -1             | nan                | 0       | -1    | []                       |\n",
-      "+--------+-------+----------+--------------------+--------------+-----------------------+----------------+--------------------+---------+-------+--------------------------+\n",
-      "TraceDataset (2 traces, 120 events)\n"
-     ]
-    }
-   ],
-   "source": [
-    "analyzer.ds.show()"
-   ]
-  }
- ],
- "metadata": {
-  "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
-   "language": "python",
-   "name": "python3"
-  },
-  "language_info": {
-   "codemirror_mode": {
-    "name": "ipython",
-    "version": 3
-   },
-   "file_extension": ".py",
-   "mimetype": "text/x-python",
-   "name": "python",
-   "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython3",
-   "version": "3.8.10"
-  }
- },
- "nbformat": 4,
- "nbformat_minor": 5
-}
diff --git a/pipit/config.py b/pipit/config.py
deleted file mode 100644
index ff575453..00000000
--- a/pipit/config.py
+++ /dev/null
@@ -1,28 +0,0 @@
-config = {
-    "notebook_url": "http://localhost:8888",
-    "theme": """
-        attrs:
-            Plot:
-                height: 350
-                width: 700
-                background_fill_color: "#fafafa"
-            Axis:
-                axis_label_text_font_style: "bold"
-                minor_tick_line_color: null
-            Toolbar:
-                autohide: true
-                logo: null
-            HoverTool:
-                point_policy: "follow_mouse"
-            Legend:
-                label_text_font_size: "8.5pt"
-                spacing: 10
-                border_line_color: null
-                glyph_width: 16
-                glyph_height: 16
-            Scatter:
-                size: 9
-            DataRange1d:
-                range_padding: 0.05
-    """,
-}