| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /*********************************************************************************/ | ||
| 2 | /* Copyright 2009-2026 Barcelona Supercomputing Center */ | ||
| 3 | /* */ | ||
| 4 | /* This file is part of the DLB library. */ | ||
| 5 | /* */ | ||
| 6 | /* DLB is free software: you can redistribute it and/or modify */ | ||
| 7 | /* it under the terms of the GNU Lesser General Public License as published by */ | ||
| 8 | /* the Free Software Foundation, either version 3 of the License, or */ | ||
| 9 | /* (at your option) any later version. */ | ||
| 10 | /* */ | ||
| 11 | /* DLB is distributed in the hope that it will be useful, */ | ||
| 12 | /* but WITHOUT ANY WARRANTY; without even the implied warranty of */ | ||
| 13 | /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */ | ||
| 14 | /* GNU Lesser General Public License for more details. */ | ||
| 15 | /* */ | ||
| 16 | /* You should have received a copy of the GNU Lesser General Public License */ | ||
| 17 | /* along with DLB. If not, see <https://www.gnu.org/licenses/>. */ | ||
| 18 | /*********************************************************************************/ | ||
| 19 | |||
| 20 | #include "mngo/mngo_resources.h" | ||
| 21 | #include "LB_comm/shmem_mngo.h" | ||
| 22 | #include "LB_comm/shmem_procinfo.h" | ||
| 23 | #include "LB_core/DLB_kernel.h" | ||
| 24 | #include "LB_core/spd.h" | ||
| 25 | #include "dlb_errors.h" | ||
| 26 | #include "support/debug.h" | ||
| 27 | #include "support/mask_utils.h" | ||
| 28 | |||
| 29 | 30 | int mngo_state__load(subprocess_descriptor_t *spd, mngo_state_t *state) { | |
| 30 | // Make sure to stop lewi if is not available for this region | ||
| 31 | // (!lewi_enabled), and always enable it when its available (lewi_enabled) | ||
| 32 | // for that region and MNGO has decided that is useful for this region | ||
| 33 | // (lewi_on). | ||
| 34 |
4/4✓ Branch 0 taken 14 times.
✓ Branch 1 taken 16 times.
✓ Branch 2 taken 4 times.
✓ Branch 3 taken 10 times.
|
30 | set_lewi_enabled(spd, spd->options.lewi && state->lewi_on); |
| 35 | |||
| 36 |
2/2✓ Branch 0 taken 16 times.
✓ Branch 1 taken 14 times.
|
30 | if (spd->options.drom) { |
| 37 | int error; | ||
| 38 | |||
| 39 | cpu_set_t current_mask; | ||
| 40 | 16 | shmem_procinfo__getprocessmask(0, ¤t_mask, DLB_DROM_FLAGS_NONE); | |
| 41 |
1/2✓ Branch 0 taken 16 times.
✗ Branch 1 not taken.
|
16 | verbose(VB_MNGO, "(Loading State) Old mask: %s", |
| 42 | mu_to_str(¤t_mask)); | ||
| 43 | |||
| 44 | // For DROM to update the process mask correctly, we need to first free | ||
| 45 | // the cpus that other processes might add in their mask. For that we | ||
| 46 | // need to set our mask to the cpus that we have and are going to keep, | ||
| 47 | // this operation is the CPU_AND. | ||
| 48 | cpu_set_t intermediate_mask; | ||
| 49 |
2/2✓ Branch 0 taken 256 times.
✓ Branch 1 taken 16 times.
|
272 | CPU_AND(&intermediate_mask, ¤t_mask, &state->drom_mask); |
| 50 | |||
| 51 |
1/2✓ Branch 0 taken 16 times.
✗ Branch 1 not taken.
|
16 | verbose(VB_MNGO, "(Loading State) Int mask: %s", |
| 52 | mu_to_str(&intermediate_mask)); | ||
| 53 | 16 | error = drom_setprocessmask(0, &intermediate_mask, DLB_DROM_FLAGS_NONE); | |
| 54 |
1/2✗ Branch 0 not taken.
✓ Branch 1 taken 16 times.
|
16 | if (error != DLB_SUCCESS) { |
| 55 | ✗ | verbose( | |
| 56 | VB_MNGO, | ||
| 57 | "Could not free cpus by setting process intermediate mask %s", | ||
| 58 | mu_to_str(&intermediate_mask)); | ||
| 59 | ✗ | return DLB_NOUPDT; | |
| 60 | } | ||
| 61 | |||
| 62 | // We then syncronize with all the other processes from the node to | ||
| 63 | // make sure that when we set the new_mask all the cpus that we'll | ||
| 64 | // aquire will be in the free list. | ||
| 65 | 16 | shmem_mngo_barrier_wait(); | |
| 66 | |||
| 67 |
1/2✓ Branch 0 taken 16 times.
✗ Branch 1 not taken.
|
16 | verbose(VB_MNGO, "(Loading State) New mask: %s", |
| 68 | mu_to_str(&(state->drom_mask))); | ||
| 69 | 16 | error = drom_setprocessmask(0, &(state->drom_mask), DLB_DROM_FLAGS_NONE); | |
| 70 |
1/2✗ Branch 0 not taken.
✓ Branch 1 taken 16 times.
|
16 | if (error != DLB_SUCCESS) { |
| 71 | ✗ | verbose(VB_MNGO, "Could not register new mask %s", | |
| 72 | mu_to_str(&state->drom_mask)); | ||
| 73 | ✗ | return DLB_ERR_PERM; | |
| 74 | } | ||
| 75 | } | ||
| 76 | |||
| 77 | 30 | return DLB_SUCCESS; | |
| 78 | } | ||
| 79 |