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author | Korey Sewell <ksewell@umich.edu> | 2006-07-02 23:11:24 -0400 |
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committer | Korey Sewell <ksewell@umich.edu> | 2006-07-02 23:11:24 -0400 |
commit | c8b3d8a1edbab505e5f9748cfa1ee866ed1fb02f (patch) | |
tree | dcf93ac40eb45dadf2edb79dbc86c2799f6d1448 /src/cpu/o3/alpha | |
parent | 23cfd9489bdff00f926f5dcfb7dd72333fb11bfb (diff) | |
download | gem5-c8b3d8a1edbab505e5f9748cfa1ee866ed1fb02f.tar.xz |
Fix default SMT configuration in O3CPU (i.e. fetch policy, workloads/numThreads)
Edit Test3 for newmem
src/base/traceflags.py:
Add O3CPU flag
src/cpu/base.cc:
for some reason adding a BaseCPU flag doesnt work so just go back to old way...
src/cpu/o3/alpha/cpu_builder.cc:
Determine number threads by workload size instead of solely by parameter.
Default SMT fetch policy to RoundRobin if it's not specified in Config file
src/cpu/o3/commit.hh:
only use nextNPC for !ALPHA
src/cpu/o3/commit_impl.hh:
add FetchTrapPending as condition for commit
src/cpu/o3/cpu.cc:
panic if active threads is more than Impl::MaxThreads
src/cpu/o3/fetch.hh:
src/cpu/o3/inst_queue.hh:
src/cpu/o3/inst_queue_impl.hh:
src/cpu/o3/rob.hh:
src/cpu/o3/rob_impl.hh:
name stuff
src/cpu/o3/fetch_impl.hh:
fatal if try to use SMT branch count, that's unimplemented right now
src/python/m5/config.py:
make it clearer that a parameter is not valid within a configuration class
--HG--
extra : convert_revision : 55069847304e40e257f9225f0dc3894ce6491b34
Diffstat (limited to 'src/cpu/o3/alpha')
-rw-r--r-- | src/cpu/o3/alpha/cpu_builder.cc | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/src/cpu/o3/alpha/cpu_builder.cc b/src/cpu/o3/alpha/cpu_builder.cc index 8190256fb..12d083a43 100644 --- a/src/cpu/o3/alpha/cpu_builder.cc +++ b/src/cpu/o3/alpha/cpu_builder.cc @@ -274,12 +274,12 @@ CREATE_SIM_OBJECT(DerivO3CPU) // In non-full-system mode, we infer the number of threads from // the workload if it's not explicitly specified. int actual_num_threads = - numThreads.isValid() ? numThreads : workload.size(); + (numThreads.isValid() && numThreads >= workload.size()) ? + numThreads : workload.size(); if (workload.size() == 0) { fatal("Must specify at least one workload!"); } - #endif AlphaSimpleParams *params = new AlphaSimpleParams; @@ -371,7 +371,16 @@ CREATE_SIM_OBJECT(DerivO3CPU) params->numROBEntries = numROBEntries; params->smtNumFetchingThreads = smtNumFetchingThreads; - params->smtFetchPolicy = smtFetchPolicy; + + // Default smtFetchPolicy to "RoundRobin", if necessary. + std::string round_robin_policy = "RoundRobin"; + std::string single_thread = "SingleThread"; + + if (actual_num_threads > 1 && single_thread.compare(smtFetchPolicy) == 0) + params->smtFetchPolicy = single_thread; + else + params->smtFetchPolicy = smtFetchPolicy; + params->smtIQPolicy = smtIQPolicy; params->smtLSQPolicy = smtLSQPolicy; params->smtLSQThreshold = smtLSQThreshold; |