Running pinplay to generate EVENT_WARMUP_START #3
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joydddd
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joydddd
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Sniper uses the 'controller' module from Pin/SDE which is described in detail here: https://www.intel.com/content/www/us/en/developer/articles/technical/pintool-regions.html |
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Good news. Even though 'wamup-start/stop' events are not documented in the pintool-regions article (that will be fixed soon), the controller does support the events warmup-start and warmup-stop (note a '-', dash, not an '_', underscore). |
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[ Thanks to @alenks for the Sniper details. ] |
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@hgpatil Thanks a lot for the help! This is very helpful information. and rewrite the import sim
SIM_USER_ROI = 0x0be0000f
class SimUserROI:
def setup(self, args):
roiscript = sim.config.get_bool('general/roi_script')
if not roiscript:
print '[SimUserROI] ERROR: --roi-script is not set, but is required when using a start instruction count. Aborting'
sim.control.abort()
return
sim.util.register_command(SIM_USER_ROI, self.set_roi)
# Out-of-bound set-roi
def set_roi(self, cmd, arg):
if (arg == 0): # start
print ('[SCRIPT] Start of ROI: beginning ROI')
sim.control.set_roi(True)
elif (arg == 1): # stop
print ('[SCRIPT] End of ROI: beginning ROI')
sim.control.set_roi(False)
elif (arg == 2): # warmup start
print ('[SCRIPT] Start of WARMUP: beginning WARMUP')
sim.control.set_instrumentation_mode(sim.control.WARMUP)
sim.util.register(SimUserROI()) |
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However, the sequence these 3 events are generated isn't what I'm expecting... The warmup-start event should come first, but it comes after the event stop. I've attached my log output from Pinplay The program I'm running is a muli-threaded program. |
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Good progress.
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There is a chance you are using an outdated version of the controller. Here's how the 'openmp' program included was tested for region reachability. export OMP_NUM_THREADS=8 This showed: global icount 540960151 Sim-Start i.e. all the region events are reported in the expected order. |
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export SDE_BUILD_KIT=path-to-sde-9.14 |
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I was using the SDE 9.14 from sniper package, but I can't build the tool Is there something I need to include in the path? On the other hand, I do notice sometime the program got deadlock with low CPU utilization while generating bbv for some benchmarks. I suspect it might have something to do with the -fopenmp library. Is there anything I need to pay attention to working with omp programs? Some of the benchmarks I'm running uses omp. Here is all the step I take to generate bbv and start simulation. pin_hook_init and pin_hook_fini are labels I inserted into my benchmarks around the compute phase I'm trying to analyze. |
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./sde-build-GlobalLoopPoint.sh should instruct you about setting PINBALL2ELF That should let you see the file >..>pinball2elf/pintools/PinballSYSState/pinball-sysstate.H |
Thanks a lot. I managed to get it running through my pipeline. It looks great: clusters are generated, and events are triggered in sniper in the right order. I then try to apply the same script and environment to my benchmarks. Unfortunately, I notice sometimes the replayer deadlocks, or no bbv is generated, in the gen bbv step while running my benchmarks which also use openmp. One more thing I want to ask: Some of my benchmarks has long loading stage before the compute stage which I care about starts running. I've inserted assembly labels |
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@hgpatil, LoopPoint tools on GitHub is already based on SDE 9.14. The problem @joydddd pointed out initially -- the warmup event occurring after the detailed simulation region -- was with Sniper, right? So, is that working correctly now, @joydddd? The deadlock issue may be happening within the flowcontrol code. You could try running the BBV generation step disabling flowcontrol and see if the issue persists. |
@alenks No, the warmup event occurring after the detailed simulation region issue persists. I don't think the problem is with sniper -- It happened during the simulation phase, but pinplay is responsible for generating the EVENT_START EVENT_WARMUP_START, and EVENT_STOP that trigger sniper to use different simulation modes. Here is the command sniper python script generates to run pin, where pinplay is responsible for generating the -control events, and also the controller logs as attached below. This log shows that pinplay is generating the events in the wrong order: |
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@joydddd Right, so were you able to see the events in the right order using the |
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Thanks for the quick reply! I tried using which is in the expected order. I'll try using sde-9.14 instead of pinplay-3.11 as the sniper frontend and see if that solves the problem. |
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@joydddd Some issues were reported while compiling Sniper with SDE-9.14, which haven't been fixed yet. I'd recommend using Pin-3.22 as the Sniper frontend ( |
@alenks Thanks for the suggestion! I used Pin as the frontend the whole time as I didn't need any pinplay-specific features, but I used the image + offset. e.g. A pinpoint I generated would look like instead of using chain+0x3229, I will test using One more question: I was testing pinplay with another benchmark on a new machine so I had to setup pinplay, pinball2elf, and sde again in the new environment. I run into this error while running and Do you have any clues about the error? Thank you so much! Joy |
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pinplay-tools was recently updated to support the latest SDE (version 9.21) and it is now the default. SDE 9.21 has some header changes which requires the pinplay-tools update.
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Thanks! I'll use |
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"export CFLAGS=-DOLDSDE" before running sde-build-GlobalLoopPoint.sh should do it. |
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I was running through all my benchmarks. Although most benchmarks worked fine, one run into this error while using the sde-global-icount tool: |
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Hi @alenks, thanks you so much for providing that! I'll try using it. |
Hi! Thanks a lot for creating this project. It has been a great help for me to build my simulation pipeline with sniper. I want to know if there is documentation about how to use Pinplay to setup a warmup region for sniper.
My current setup:
I built my pipeline with looppoint. https://github.com/nus-comparch/looppoint
I used my own benchmark and successfully generated mt_pinballs, dcfg, bbv and cluster. The cluster is generated for both roi and warmup region.
Then I start sniper simulation with
where pinplay generates EVENT_START and EVENT_STOP from
-pinplay:control start:address:chain+0x3229:count4329326580:global -pinplay:control stop:address:chain+0x3229:count4456164370:globaland snipersim pinkit will handle these two events and control the simulation.
I want to update the pinplay script so that it also generates EVENT_WARMUP_START at
address:0x3229:3981422787 :globalto trigger sniper handler start a warmup region.The text was updated successfully, but these errors were encountered: