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plimit: restore default limit on exit if changed

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and show log on start if set/changed without --debug
This commit is contained in:
Tanguy Pruvot 2015-06-24 15:48:04 +02:00
parent 7c5087d01c
commit 5abfac72d6
1 changed files with 24 additions and 11 deletions
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35
nvml.cpp
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@ -41,6 +41,7 @@ extern uint32_t device_plimit[MAX_GPUS];
extern int8_t device_pstate[MAX_GPUS];
uint8_t gpu_clocks_changed[MAX_GPUS] = { 0 };
uint8_t gpu_limits_changed[MAX_GPUS] = { 0 };
/*
* Wrappers to emulate dlopen() on other systems like Windows
@ -373,16 +374,26 @@ int nvml_reset_clocks(nvml_handle *nvmlh, int dev_id)
if (n < 0 || n >= nvmlh->nvml_gpucount)
return -ENODEV;
if (!gpu_clocks_changed[dev_id])
return 0; // nothing to do
rc = nvmlh->nvmlDeviceResetApplicationsClocks(nvmlh->devs[n]);
if (rc != NVML_SUCCESS) {
applog(LOG_WARNING, "GPU #%d: unable to reset application clocks", dev_id);
return -1;
if (gpu_clocks_changed[dev_id]) {
rc = nvmlh->nvmlDeviceResetApplicationsClocks(nvmlh->devs[n]);
if (rc != NVML_SUCCESS) {
applog(LOG_WARNING, "GPU #%d: unable to reset application clocks", dev_id);
return -1;
}
gpu_clocks_changed[dev_id] = 0;
}
gpu_clocks_changed[dev_id] = 0;
return 1;
if (gpu_limits_changed[dev_id]) {
uint32_t plimit = 0;
if (nvmlh->nvmlDeviceGetPowerManagementDefaultLimit) {
rc = nvmlh->nvmlDeviceGetPowerManagementDefaultLimit(nvmlh->devs[n], &plimit);
if (rc == NVML_SUCCESS)
nvmlh->nvmlDeviceSetPowerManagementLimit(nvmlh->devs[n], plimit);
}
gpu_limits_changed[dev_id] = 0;
return 1;
}
return 0;
}
@ -453,7 +464,7 @@ int nvml_set_pstate(nvml_handle *nvmlh, int dev_id)
return -1;
}
if (opt_debug)
if (!opt_quiet)
applog(LOG_INFO, "GPU #%d: app clocks set to P%d (%u/%u)", dev_id, (int) wanted_pstate, mem_clk, gpu_clk);
gpu_clocks_changed[dev_id] = 1;
@ -494,11 +505,13 @@ int nvml_set_plimit(nvml_handle *nvmlh, int dev_id)
return -1;
}
if (opt_debug) {
if (!opt_quiet) {
applog(LOG_INFO, "GPU #%d: power limit set to %uW (allowed range is %u-%u)",
dev_id, plimit/1000U, pmin/1000U, pmax/1000U);
}
gpu_limits_changed[dev_id] = 1;
return 0;
}