Always check MPI buffer size for overflow

Always check MPI buffer size for overflow. This check is very fast compared to the overall communication time.
AMReX-Codes · Dec 31, 2019 · ff3264f · ff3264f
1 parent 04f34c9
commit ff3264f
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/Src/Base/AMReX_FabArrayCommI.H b/Src/Base/AMReX_FabArrayCommI.H
@@ -120,7 +120,7 @@ FabArray<FAB>::FBEP_nowait (int scomp, int ncomp, const IntVect& nghost,
                 nbytes += (*this)[cct.srcIndex].nBytes(cct.sbox,scomp,ncomp);
             }
 
-            BL_ASSERT(nbytes < std::size_t(std::numeric_limits<int>::max()));
+            AMREX_ALWAYS_ASSERT(nbytes < std::size_t(std::numeric_limits<int>::max()));
 
             total_volume += nbytes;
 
@@ -448,7 +448,7 @@ FabArray<FAB>::ParallelCopy (const FabArray<FAB>& src,
                     nbytes += src[cct.srcIndex].nBytes(cct.sbox,SC,NC);
                 }
 
-		BL_ASSERT(nbytes < std::size_t(std::numeric_limits<int>::max()));
+		AMREX_ALWAYS_ASSERT(nbytes < std::size_t(std::numeric_limits<int>::max()));
 
                 total_volume += nbytes;
 
@@ -672,7 +672,7 @@ FabArray<FAB>::PostRcvs (const MapOfCopyComTagContainers&  m_RcvTags,
             nbytes += (*this)[cct.dstIndex].nBytes(cct.dbox,icomp,ncomp);
         }
 
-        BL_ASSERT(nbytes < std::size_t(std::numeric_limits<int>::max()));
+        AMREX_ALWAYS_ASSERT(nbytes < std::size_t(std::numeric_limits<int>::max()));
 
         TotalRcvsVolume += nbytes;