could not allocate host pinned memory

[Yushui Tong]

 Hi all,

When I was running cp2k-7.0-cuda on a gpu, it gave such an error message as below:

 *  \___/      acc_hostmem_alloc_raw: Could not allocate host pinned memory    *

 *    |                                                                        *

 *  O/|                                                                        *

 * /| |                                                                        *

 * / \                                                 dbcsr_acc_hostmem.F:112 *

 *******************************************************************************

Does it mean it needs more memory? But I have requested the maximum memory at the GPU. Look at the DBCSR message as show below, I am not sure how many threads was used for the calculation. My question is if I already used all the memory available at GPU, is there an option to limit the threads running in GPU therefore to reduce the memory requirement?

Thanks.

 DBCSR| ACC: Number of devices/node                                            1

 DBCSR| ACC: Number of priority stack-buffers                                 40

 DBCSR| ACC: Number of posterior stack-buffers                                80

 DBCSR| ACC: Number of priority streams                                        4

 DBCSR| ACC: Number of posterior streams                                       4

 DBCSR| ACC: Avoid driver after busy                                           F

 DBCSR| ACC: Process inhomogeneous stacks                                      T

 DBCSR| ACC: Min. flop for processing                                          0

 DBCSR| ACC: Min. flop for sorting                                          4000

 DBCSR| ACC: Number of binning bins                                         4096

 DBCSR| ACC: Size of binning bins                                             16

[Yushui Tong]

anyone has more specific idea of what this means?

Thanks.

Yushui