Exploiting GPUs in Virtual Machine for BioCloud

Algorithm 1

An example implementation of the WrapCUDA library function.

(1) cudaError_t cudaGetDeviceCount(int *count) {

(2) static cudaError_t (*ofuncp)(int *count);

(3) char *error;

(4) cudaError_t rs;

(5)

(6) checkgpuon(); // Checks having GPU. Request a GPU, if not.

(7)

(8) if (!ofuncp) {

(9)  ofuncp = dlsym(RTLD_NEXT, “cudaGetDeviceCount”);

(10)   if ((error = dlerror()) != NULL) {

(11)    fputs(error, stderr);

(12)   exit(1);

(13)   }

(14)  }

(15)  rs = ofuncp(count);

(16)  return rs;

(17) }