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CUDA tutorial: Difference between revisions
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→Few Basic CUDA Operations
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= Few Basic CUDA Operations = | = Few Basic CUDA Operations = | ||
== CUDA Memory Allocation | == CUDA Memory Allocation == | ||
* cudaMalloc((void**)&array, size) | * cudaMalloc((void**)&array, size) | ||
** Allocates object in the device memory. Requires address of a pointer of allocated array and size. | ** Allocates object in the device memory. Requires address of a pointer of allocated array and size. | ||
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* cudaMemcpy(array_dest, array_orig, size, direction) | * cudaMemcpy(array_dest, array_orig, size, direction) | ||
** Copy the data from either device to host or host to device . Requires pointers to the arrays, size and the direction type (cudaMemcpyHostToDevice, cudaMemcpyDeviceToHost, cudaMemcpyDeviceToDevice, etc) | ** Copy the data from either device to host or host to device . Requires pointers to the arrays, size and the direction type (cudaMemcpyHostToDevice, cudaMemcpyDeviceToHost, cudaMemcpyDeviceToDevice, etc) | ||
* cudaMemcpyAsync | |||
** Same as cudaMemcpy, but transfers the data asynchronously which means it's not blocking execution of other processes. | |||
= First CUDA C Program= | = First CUDA C Program= | ||