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Fix openib memory registration limit calculation if cutoff = 0. #852

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Dec 18, 2015
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Fix openib memory registration limit calculation if cutoff = 0. #852

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2 changes: 1 addition & 1 deletion opal/mca/btl/openib/btl_openib.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1040,7 +1040,7 @@ int mca_btl_openib_add_procs(
}

openib_btl->local_procs += local_procs;
openib_btl->device->mem_reg_max /= openib_btl->local_procs;
openib_btl->device->mem_reg_max = openib_btl->device->mem_reg_max_total / openib_btl->local_procs;

return OPAL_SUCCESS;
}
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2 changes: 1 addition & 1 deletion opal/mca/btl/openib/btl_openib.h
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Expand Up @@ -409,7 +409,7 @@ typedef struct mca_btl_openib_device_t {
/* Maximum value supported by this device for max_inline_data */
uint32_t max_inline_data;
/* Registration limit and current count */
uint64_t mem_reg_max, mem_reg_active;
uint64_t mem_reg_max, mem_reg_max_total, mem_reg_active;
/* Device is ready for use */
bool ready_for_use;
/* Async event */
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3 changes: 2 additions & 1 deletion opal/mca/btl/openib/btl_openib_component.c
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Expand Up @@ -1630,7 +1630,8 @@ static int init_one_device(opal_list_t *btl_list, struct ibv_device* ib_dev)
}

device->mem_reg_active = 0;
device->mem_reg_max = calculate_max_reg(ibv_get_device_name(ib_dev));
device->mem_reg_max_total = calculate_max_reg(ibv_get_device_name(ib_dev));
device->mem_reg_max = device->mem_reg_max_total;
if(( 0 == device->mem_reg_max) && mca_btl_openib_component.abort_not_enough_reg_mem) {
return OPAL_ERROR;
}
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