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add initial memory flag in MB for infer #11392

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Merged
merged 1 commit into from
Jun 12, 2018
Merged

add initial memory flag in MB for infer #11392

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9 changes: 8 additions & 1 deletion paddle/fluid/platform/cpu_info.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -21,12 +21,17 @@ limitations under the License. */
#include <unistd.h>
#endif

#include <algorithm>
#include "gflags/gflags.h"

DEFINE_double(fraction_of_cpu_memory_to_use, 1,
"Default use 100% of CPU memory for PaddlePaddle,"
"reserve the rest for page tables, etc");

DEFINE_uint64(
initial_cpu_memory_in_mb, 500,
"Default initial 500MB of CPU memory for PaddlePaddle, in MD unit.");

DEFINE_double(
fraction_of_cuda_pinned_memory_to_use, 0.5,
"Default use 50% of CPU memory as the pinned_memory for PaddlePaddle,"
Expand Down Expand Up @@ -54,7 +59,9 @@ inline size_t CpuTotalPhysicalMemory() {
size_t CpuMaxAllocSize() {
// For distributed systems, it requires configuring and limiting
// the fraction of memory to use.
return FLAGS_fraction_of_cpu_memory_to_use * CpuTotalPhysicalMemory();
return std::min(static_cast<size_t>(FLAGS_fraction_of_cpu_memory_to_use *
CpuTotalPhysicalMemory()),
FLAGS_initial_cpu_memory_in_mb * 1 << 20);
}

size_t CpuMinChunkSize() {
Expand Down