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cuda_data.cu
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Tue, Jul 16, 08:11
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Thu, Jul 18, 08:11 (2 d)
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rLAMMPS lammps
cuda_data.cu
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enum copy_mode {x, xx, xy, yx, xyz, xzy}; // yxz, yzx, zxy, zyx not yet implemented since they were not needed yet
#include "cuda_data_cu.h"
#include "cuda_wrapper_cu.h"
#include "cuda_data_kernel.cu"
#include <cstdio>
void CudaData_Upload_DoubleFloat(void* host_data, void* dev_data, unsigned* n, copy_mode mode, void* buffer)
{
int size = n[0];
if(n[1] > 0) size *= n[1];
if(n[2] > 0) size *= n[2];
dim3 threads;
threads.x = 1;
threads.y = 1;
threads.z = 1;
dim3 grid;
grid.x = 1;
grid.y = 1;
grid.z = 1;
if(size <= 128 * 30)
threads.x = 32;
else if(size <= 256 * 30)
threads.x = 64;
else if(size <= 512 * 30)
threads.x = 128;
else
threads.x = 256;
grid.x = ((size - 1) + threads.x) / threads.x;
if(grid.x > 32000)
grid.x = 32000;
while(grid.x * grid.y * threads.x < size) grid.y++;
float debugdata[size];
//int* cu_debug=(int*) CudaWrapper_AllocCudaData(size*sizeof(FLOAT));
size *= sizeof(double);
printf("size: %i (%i %i %i) (%i %i %i) %p\n", size, grid.x, grid.y, threads.x, n[0], n[1], n[2], buffer);
CudaWrapper_UploadCudaData(host_data, buffer, size);
CudaData_Upload_Kernel_DoubleFloat <<< grid, threads>>>((double*)buffer, (float*)dev_data, n[0], n[1], n[2], mode);
cudaThreadSynchronize();
CudaWrapper_DownloadCudaData(debugdata, dev_data, size / 2);
double sum = 0;
printf("debugdata: ");
for(int i = 0; i < size / sizeof(double); i++) sum += (debugdata[i] - ((double*) host_data)[i]) * (debugdata[i] - ((double*) host_data)[i]);
printf("%lf \n", sum);
}
void CudaData_Upload_DoubleDouble(void* host_data, void* dev_data, unsigned* n, copy_mode mode, void* buffer)
{
int size = n[0];
if(n[1] > 0) size *= n[1];
if(n[2] > 0) size *= n[2];
dim3 threads;
threads.x = 1;
threads.y = 1;
threads.z = 1;
dim3 grid;
grid.x = 1;
grid.y = 1;
grid.z = 1;
if(size <= 128 * 30)
threads.x = 32;
else if(size <= 256 * 30)
threads.x = 64;
else if(size <= 512 * 30)
threads.x = 128;
else
threads.x = 256;
grid.x = ((size - 1) + threads.x) / threads.x;
if(grid.x > 32000)
grid.x = 32000;
while(grid.x * grid.y * threads.x < size) grid.y++;
size *= sizeof(double);
CudaWrapper_UploadCudaData(host_data, buffer, size);
CudaData_Upload_Kernel_DoubleDouble <<< grid, threads>>>((double*)buffer, (double*)dev_data, n[0], n[1], n[2], mode);
cudaThreadSynchronize();
}
void CudaData_Upload_FloatDouble(void* host_data, void* dev_data, unsigned* n, copy_mode mode, void* buffer)
{
int size = n[0];
if(n[1] > 0) size *= n[1];
if(n[2] > 0) size *= n[2];
dim3 threads;
threads.x = 1;
threads.y = 1;
threads.z = 1;
dim3 grid;
grid.x = 1;
grid.y = 1;
grid.z = 1;
if(size <= 128 * 30)
threads.x = 32;
else if(size <= 256 * 30)
threads.x = 64;
else if(size <= 512 * 30)
threads.x = 128;
else
threads.x = 256;
grid.x = ((size - 1) + threads.x) / threads.x;
if(grid.x > 32000)
grid.x = 32000;
while(grid.x * grid.y * threads.x < size) grid.y++;
size *= sizeof(float);
CudaWrapper_UploadCudaData(host_data, buffer, size);
CudaData_Upload_Kernel_FloatDouble <<< grid, threads>>>((float*)buffer, (double*)dev_data, n[0], n[1], n[2], mode);
cudaThreadSynchronize();
}
void CudaData_Upload_FloatFloat(void* host_data, void* dev_data, unsigned* n, copy_mode mode, void* buffer)
{
int size = n[0];
if(n[1] > 0) size *= n[1];
if(n[2] > 0) size *= n[2];
dim3 threads;
threads.x = 1;
threads.y = 1;
threads.z = 1;
dim3 grid;
grid.x = 1;
grid.y = 1;
grid.z = 1;
if(size <= 128 * 30)
threads.x = 32;
else if(size <= 256 * 30)
threads.x = 64;
else if(size <= 512 * 30)
threads.x = 128;
else
threads.x = 256;
grid.x = ((size - 1) + threads.x) / threads.x;
if(grid.x > 32000)
grid.x = 32000;
while(grid.x * grid.y * threads.x < size) grid.y++;
size *= sizeof(float);
CudaWrapper_UploadCudaData(host_data, buffer, size);
CudaData_Upload_Kernel_FloatFloat <<< grid, threads>>>((float*)buffer, (float*)dev_data, n[0], n[1], n[2], mode);
cudaThreadSynchronize();
}
void CudaData_Upload_IntInt(void* host_data, void* dev_data, unsigned* n, copy_mode mode, void* buffer)
{
int size = n[0];
if(n[1] > 0) size *= n[1];
if(n[2] > 0) size *= n[2];
dim3 threads;
threads.x = 1;
threads.y = 1;
threads.z = 1;
dim3 grid;
grid.x = 1;
grid.y = 1;
grid.z = 1;
if(size <= 128 * 30)
threads.x = 32;
else if(size <= 256 * 30)
threads.x = 64;
else if(size <= 512 * 30)
threads.x = 128;
else
threads.x = 256;
grid.x = ((size - 1) + threads.x) / threads.x;
if(grid.x > 32000)
grid.x = 32000;
while(grid.x * grid.y * threads.x < size) grid.y++;
size *= sizeof(int);
CudaWrapper_UploadCudaData(host_data, buffer, size);
CudaData_Upload_Kernel_IntInt <<< grid, threads>>>((int*)buffer, (int*)dev_data, n[0], n[1], n[2], mode);
cudaThreadSynchronize();
}
void CudaData_Download(void* host_data, void* dev_data, int host_size, int dev_size, unsigned* n, copy_mode mode, void* buffer)
{
}
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