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Intel(R) oneAPI Collective Communications Library (oneCCL) 2021.6
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Taru Doodi
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,125 @@ | ||
| /* | ||
| Copyright 2016-2020 Intel Corporation | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
| #include "sycl_base.hpp" | ||
|
|
||
| using namespace std; | ||
| using namespace sycl; | ||
|
|
||
| int main(int argc, char *argv[]) { | ||
| const size_t count = 10 * 1024 * 1024; | ||
|
|
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| int size = 0; | ||
| int rank = 0; | ||
|
|
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| ccl::init(); | ||
|
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| MPI_Init(NULL, NULL); | ||
| MPI_Comm_size(MPI_COMM_WORLD, &size); | ||
| MPI_Comm_rank(MPI_COMM_WORLD, &rank); | ||
|
|
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| atexit(mpi_finalize); | ||
|
|
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| queue q; | ||
| if (!create_sycl_queue(argc, argv, rank, q)) { | ||
| return -1; | ||
| } | ||
|
|
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| buf_allocator<int> allocator(q); | ||
|
|
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| auto usm_alloc_type = usm::alloc::shared; | ||
| if (argc > 2) { | ||
| usm_alloc_type = usm_alloc_type_from_string(argv[2]); | ||
| } | ||
|
|
||
| if (!check_sycl_usm(q, usm_alloc_type)) { | ||
| return -1; | ||
| } | ||
|
|
||
| /* create kvs */ | ||
| ccl::shared_ptr_class<ccl::kvs> kvs; | ||
| ccl::kvs::address_type main_addr; | ||
| if (rank == 0) { | ||
| kvs = ccl::create_main_kvs(); | ||
| main_addr = kvs->get_address(); | ||
| MPI_Bcast((void *)main_addr.data(), main_addr.size(), MPI_BYTE, 0, MPI_COMM_WORLD); | ||
| } | ||
| else { | ||
| MPI_Bcast((void *)main_addr.data(), main_addr.size(), MPI_BYTE, 0, MPI_COMM_WORLD); | ||
| kvs = ccl::create_kvs(main_addr); | ||
| } | ||
|
|
||
| /* create communicator */ | ||
| auto dev = ccl::create_device(q.get_device()); | ||
| auto ctx = ccl::create_context(q.get_context()); | ||
| auto comm = ccl::create_communicator(size, rank, dev, ctx, kvs); | ||
|
|
||
| /* create stream */ | ||
| auto stream = ccl::create_stream(q); | ||
|
|
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| /* create buffers */ | ||
| auto recv_buf = allocator.allocate(count * size, usm_alloc_type); | ||
|
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| vector<size_t> recv_counts(size, count); | ||
|
|
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| /* open buffers and modify them on the device side */ | ||
| auto e = q.submit([&](auto &h) { | ||
| h.parallel_for(count * size, [=](auto id) { | ||
| recv_buf[id] = id / count + 1; | ||
| }); | ||
| }); | ||
|
|
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| /* do not wait completion of kernel and provide it as dependency for operation */ | ||
| vector<ccl::event> deps; | ||
| deps.push_back(ccl::create_event(e)); | ||
|
|
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| /* invoke alltoallv */ | ||
| auto attr = ccl::create_operation_attr<ccl::alltoallv_attr>(); | ||
| ccl::alltoallv(recv_buf, recv_counts, recv_buf, recv_counts, comm, stream, attr, deps).wait(); | ||
|
|
||
| /* open recv_buf recv_buf and check its correctness on the device side */ | ||
| buffer<int> check_buf(count * size); | ||
| q.submit([&](auto &h) { | ||
| accessor check_buf_acc(check_buf, h, write_only); | ||
| h.parallel_for(count * size, [=](auto id) { | ||
| if (recv_buf[id] != rank + 1) { | ||
| check_buf_acc[id] = -1; | ||
| } | ||
| else { | ||
| check_buf_acc[id] = 0; | ||
| } | ||
| }); | ||
| }); | ||
|
|
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| if (!handle_exception(q)) | ||
| return -1; | ||
|
|
||
| /* print out the result of the test on the host side */ | ||
| { | ||
| host_accessor check_buf_acc(check_buf, read_only); | ||
| size_t i; | ||
| for (i = 0; i < size * count; i++) { | ||
| if (check_buf_acc[i] == -1) { | ||
| cout << "FAILED\n"; | ||
| break; | ||
| } | ||
| } | ||
| if (i == size * count) { | ||
| cout << "PASSED\n"; | ||
| } | ||
| } | ||
|
|
||
| return 0; | ||
| } |
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