Add "golden RISCV" HW model

[dpetrisko]

Could have very productive co-simulation benefits (BlackParrot in one window, golden model running in another). A couple ways to do this:

1. Translate spike output to a VCD https://github.com/riscv/riscv-isa-sim
2. Compile spike as a library and hook into it (Ariane does this to some degree, I believe) https://github.com/pulp-platform/ariane
3. Support reading in alternate formats such as log files (seems difficult and out of scope)

Could also look into RISCV-OVPSIM. Their goal is to be a compliance simulator, so there's a lot more rigor and flexibility than Spike, despite its relatively less popularity https://github.com/riscv/riscv-ovpsim

[taylor-bsg]

Aside: In general, offline representations (e.g. traces) are more useful than runtime representations (I.e. linked simulators) but one place where they are not is when you need to synchronize them (I.e. when did the interrupt come in?) it would be interesting to know if Ariane did anything useful. Aside2: if we had a concept of context switches in our comparison tool (I.e. this is an interrupt thread, this is an emulation thread) then offline comparisons could withstand some amount of deviation. M

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On Fri, Aug 2, 2019 at 9:06 AM Dan Petrisko ***@***.***> wrote: Could have very productive co-simulation benefits (BlackParrot in one window, golden model running in another). A couple ways to do this: 1. Translate spike output to a VCD https://github.com/riscv/riscv-isa-sim 2. Compile spike as a library and hook into it (Ariane does this to some degree, I believe) https://github.com/pulp-platform/ariane 3. Support reading in alternate formats such as log files (seems difficult and out of scope) Could also look into RISCV-OVPSIM. Their goal is to be a compliance simulator, so there's a lot more rigor and flexibility than Spike, despite its relatively less popularity https://github.com/riscv/riscv-ovpsim — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#14?email_source=notifications&email_token=AEFG5ADGNNQJO5RKPWCSUQTQCRLSDA5CNFSM4II7DSNKYY3PNVWWK3TUL52HS4DFUVEXG43VMWVGG33NNVSW45C7NFSM4HDDBVTQ>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AEFG5AHPZ3YQAZXXB4N3GELQCRLSDANCNFSM4II7DSNA> .