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Measure memory transfer of CPU to GPU, add explanation how to distribute calculation among multiple GPUs

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This commit is contained in:
Maximilian Gaul 2021-12-01 17:16:32 +01:00
parent da90466f98
commit 7691b23d67
1 changed files with 6 additions and 1 deletions
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7
src/force.cu
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@ -144,10 +144,15 @@ double computeForce(
for(int i = 0; i < nDevices; ++i) { for(int i = 0; i < nDevices; ++i) {
cudaDeviceProp prop; cudaDeviceProp prop;
cudaGetDeviceProperties(&prop, i); cudaGetDeviceProperties(&prop, i);
printf("DEVICE NAME: %s\r\n", prop.name); printf("DEVICE %d/%d NAME: %s\r\n", i + 1, nDevices, prop.name);
} }
// Choose GPU where you want to execute code on
// It is possible to execute the same kernel on multiple GPUs but you have to copy the data multiple times
// Executing `cudaSetDevice(N)` before cudaMalloc / cudaMemcpy / calc_force <<< >>> will set the GPU accordingly
*/ */
// HINT: Run with cuda-memcheck ./MDBench-NVCC in case of error // HINT: Run with cuda-memcheck ./MDBench-NVCC in case of error
// HINT: Only works for data layout = AOS!!! // HINT: Only works for data layout = AOS!!!