Databases
StackOverflow2013
Postsdbo
POhow can i overcome memory allocation in cuda
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POhow can i overcome memory allocation in cuda
    primarykey
    data
    text
    <p>I have a question. I'm working with the 4.0 cuda. I have the following code:</p> <p>in my cudaHeader.h:</p> <pre><code>#include &lt;stdlib.h&gt; extern "C" void wrapperfunction(int* array); </code></pre> <p>in my cudaCpp.cpp:</p> <pre><code>#include &lt;stdio.h&gt; ...... int main() { int array[50] = {0, 1, 2, ..........,49}; ........... while(true) { ........ wrapperfunction(array); ........ } return 0; } </code></pre> <p>in my cuda.CU:</p> <pre><code>__global__ void kernel(int *new_arrayG, int *arrayG,int *const_arrayG) { int x = threadIdx.x; new_arrayG[x] = arrayG[x] + const_arrayG[x]; __syncthreads(); } extern "C" int wrapperfunction(int* array) { static int const_array[50] = {0, 1, 2, ........., 49}; //any constant data int *arrayG, *new_arrayG, *const_arrayG; int size = 50 * sizeof(int); cudaMalloc((void**)&amp;arrayG, size); cudaMalloc((void**)&amp;new_arrayG, size); cudaMalloc((void**)&amp;const_arrayG, size); cudaMemcpy(const_arrayG, const_array, size, cudaMemcpyHostToDevice); cudaMemcpy(arrayG, array, size, cudaMemcpyHostToDevice); Kernel&lt;&lt;&lt;1, 50&gt;&gt;&gt;(new_arrayG, arrayG, const_arrayG); cudaMemcpy(array, new_arrayG, size, cudaMemcpyDeviceToHost); cudaFree(arrayG);cudaFree(new_arrayG);cudaFree(const_arrayG); } </code></pre> <p>this a sample from my code, i wanna to say each time i call the wrapperfunction from my .cpp code the program allocate the static array and free it at the end and it it takes much time and at real i deal with very large static array and each time call this function i take very much time. so i wanna to a way to allocate my static arrays one time at the begining of the program and free them at the end of my program(application). Plz. any helping.</p> <p>Thanks.</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USabdo.eng 2006210
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload