/usr/include/gromacs/pmalloc_cuda.h is in gromacs-dev 4.6.5-1build1.
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#ifndef PMALLOC_CUDA_H
#define PMALLOC_CUDA_H
#ifdef GMX_GPU
#define FUNC_TERM ;
#else
#define FUNC_TERM {}
#endif
#ifdef __cplusplus
extern "C" {
#endif
/*! Allocates nbytes of page-locked memory. */
void pmalloc(void **h_ptr, size_t nbytes) FUNC_TERM
/*! Allocates nbytes of page-locked memory with write-combining. */
void pmalloc_wc(void **h_ptr, size_t nbytes) FUNC_TERM
/*! Frees page locked memory allocated with pmalloc. */
void pfree(void *h_ptr) FUNC_TERM
#ifdef __cplusplus
}
#endif
#endif /* PMALLOC_CUDA_H */
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