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increase safety memory for autosuggestion

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- increase safty memory from 64 to 128 MiB
- NVIDIA: increase lmem reserve per thread to 1kiB
This commit is contained in:
psychocrypt
2017-10-27 21:40:38 +02:00
parent c192b97b67
commit 3e091d9251
2 changed files with 10 additions and 10 deletions
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xmrstak/backend/amd/autoAdjust.hpp
+2 -2
View File
@@ -97,8 +97,8 @@ private:
int i = 0;
for(auto& ctx : devVec)
{
// keep 64MiB memory free (value is randomly chosen)
size_t availableMem = ctx.freeMem - (64u * 1024 * 1024);
// keep 128MiB memory free (value is randomly chosen)
size_t availableMem = ctx.freeMem - (128u * byteToMiB);
// 224byte extra memory is used per thread for meta data
size_t perThread = hashMemSize + 224u;
size_t max_intensity = availableMem / perThread;
xmrstak/backend/nvidia/nvcc_code/cuda_extra.cu
+8 -8
View File
@@ -332,19 +332,19 @@ extern "C" int cuda_get_deviceinfo(nvid_ctx* ctx)
* `8 * ctx->device_threads` threads per block
*/
ctx->device_threads = 64;
constexpr size_t byte2mib = 1024u * 1024u;
constexpr size_t byteToMiB = 1024u * 1024u;
// no limit by default 1TiB
size_t maxMemUsage = byte2mib * byte2mib;
size_t maxMemUsage = byteToMiB * byteToMiB;
if(props.major < 6)
{
// limit memory usage for GPUs before pascal
maxMemUsage = size_t(2048u) * byte2mib;
maxMemUsage = size_t(2048u) * byteToMiB;
}
if(props.major == 2)
{
// limit memory usage for sm 20 GPUs
maxMemUsage = size_t(1024u) * byte2mib;
maxMemUsage = size_t(1024u) * byteToMiB;
}
size_t freeMemory = 0;
@@ -364,13 +364,13 @@ extern "C" int cuda_get_deviceinfo(nvid_ctx* ctx)
hashMemSize = AEON_MEMORY;
}
// keep 64MiB memory free (value is randomly chosen)
// keep 128MiB memory free (value is randomly chosen)
// 200byte are meta data memory (result nonce, ...)
size_t availableMem = freeMemory - (64u * 1024 * 1024) - 200u;
size_t availableMem = freeMemory - (128u * byteToMiB) - 200u;
size_t limitedMemory = std::min(availableMem, maxMemUsage);
// up to 920bytes extra memory is used per thread for some kernel (lmem/local memory)
// up to 1kibyte extra memory is used per thread for some kernel (lmem/local memory)
// 680bytes are extra meta data memory per hash
size_t perThread = hashMemSize + 740u + 680u;
size_t perThread = hashMemSize + 1024u + 680u;
size_t max_intensity = limitedMemory / perThread;
ctx->device_threads = max_intensity / ctx->device_blocks;
// use only odd number of threads