Hi Abdelrahman, Thank you for your questions on the mailing list. I will try to answer them as best as I can.
- The trace CPU model was not designed to support multithreaded applications or multiple cores. It was only tested with single-threaded benchmarks in both SE and FS mode. Therefore, generating multiple trace files for different threads/cores may not work as expected or may cause errors. - The O3 CPU is capable of traces, but I don't know if/how that will work with multiple cores. You'll have to dig in and modify the code, most likely. - Instructions should already have that information (i.e., the StaticInst class). You can extend the trace formats as well by modifying that code. Cheers, Jason On Fri, Sep 8, 2023 at 5:19 PM Abdelrahman S. Hussein via gem5-users < gem5-users@gem5.org> wrote: > Hi, > > I am seeking to generate multiple trace files for multi-threaded workloads > that run in FS (Full-System simulation mode). My plan is to configure the > simulation to have multiple cores, boot the image, run the workload, and > record the traces of instructions that run on each core, such that each > core/thread has its own trace file. My end goal is to have a number of > trace files, each represent a core or a thread. > > Questions: > > - Is gem5 capable of generating multiple trace files? > - I am checking the Trace CPU Model page on gem5 > <https://www.gem5.org/documentation/general_docs/cpu_models/TraceCPU> > website. It has this statement "The traces have been developed for > single-threaded benchmarks simulating in both SE and FS mode". Does this > mean generating multiple trace files for different threads/cores > is unsupported by gem5? > - Is the O3 CPU capable of recording such traces? The goal is to > generate traces using an Out-of-Order superscalar CPU. > - I may have to add a few more fields to the instruction class, such > as a boolean variable to check if the instruction is a branch for example. > which file(s) should I look at? > > > Looking forward to your answer. > > Thanks, > ~Abdelrahman > > -- > > *Best,Abdelrahman Hussein* > > _______________________________________________ > gem5-users mailing list -- gem5-users@gem5.org > To unsubscribe send an email to gem5-users-le...@gem5.org >
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