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Memory leak when ACML_FAST_MALLOC is enabled

Question asked by ionutg on Mar 28, 2012
Latest reply on Mar 29, 2012 by chipf



I just observed a memory leak in the multi-threaded ACML 5.1.0 with FMA4 compiled for Intel Fortran (ifort64_fma4_mp) when ACML_FAST_MALLOC is enabled. The program calls dgemm a few hundred times on a set of 3 matrices (10000x10000). The memory usage increases linearly until the process runs out of memory and is killed with "Insufficient virtual memory". Unsetting ACML_FAST_MALLOC leaves the memory usage flat.