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| author | Matthew Poremba <matthew.poremba@amd.com> | 2019-05-01 11:32:49 -0700 |
|---|---|---|
| committer | Matthew Poremba <matthew.poremba@amd.com> | 2019-06-06 19:55:38 +0000 |
| commit | f2be9f195c5aa226fa546e79c9acf95c8a800915 (patch) | |
| tree | dcfe73963c796bb17001b1967f66474661ead9ce /configs/common/MemConfig.py | |
| parent | f5cf6d5f5ef8df0fedcba9d3cf3c16d76a6dceae (diff) | |
| download | gem5-f2be9f195c5aa226fa546e79c9acf95c8a800915.tar.xz | |
mem: Option to toggle DRAM low-power states
Adding an option to enable DRAM low-power states. The low power
states can have a significant impact on application performance
(sim_ticks) on the order of 2-3x, especially for compute-gpu apps.
The options allows for it to easily be enabled/disabled to compare
performance numbers. The option is disabled by default.
Change-Id: Ib9bddbb792a1a6a4afb5339003472ff8f00a5859
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/18548
Reviewed-by: Wendy Elsasser <wendy.elsasser@arm.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Diffstat (limited to 'configs/common/MemConfig.py')
| -rw-r--r-- | configs/common/MemConfig.py | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/configs/common/MemConfig.py b/configs/common/MemConfig.py index 29c41388c..d09869285 100644 --- a/configs/common/MemConfig.py +++ b/configs/common/MemConfig.py @@ -224,6 +224,11 @@ def config_mem(options, system): if issubclass(cls, m5.objects.DRAMCtrl) and opt_mem_ranks: mem_ctrl.ranks_per_channel = opt_mem_ranks + # Enable low-power DRAM states if option is set + if issubclass(cls, m5.objects.DRAMCtrl): + mem_ctrl.enable_dram_powerdown = \ + options.enable_dram_powerdown + if opt_elastic_trace_en: mem_ctrl.latency = '1ns' print("For elastic trace, over-riding Simple Memory " |