On Apr 16, 2008, at 7:51 PM, Ali Saidi wrote:
(2) The memory system configuration is
system = System(cpu = [CPUClass(cpu_id=i) for i in xrange(np)],
physmem = PhysicalMemory(range=AddrRange("2048MB")),
membus = Bus(), mem_mode = 'timing')
This is the largest number I can set.
There are 9 spec2006 benchmarks has the problem
" terminate called after throwing an instance of
'std::bad_alloc' "
I tried to use a smaller dataset in 410.bwaves. It finished
correctly without any problem.
What should I do to avoid this problem or correct it without
changing the dataset?
So it did work with a smaller dataset? Two possibilities arise:
1) There is a bug. Either with the way we allocate memory or some
how we're emulating mmap wrong. It's not impossible, but I think
it's pretty unlikely.
2) The benchmark needs that much memory. I found the following:
Memory SPEC CPU2006 requirements to memory have grown significantly:
the typical memory size is 1 GB for 32-bit systems, exclusive of OS/
overhead, but more may be required. Typically, 64-bit environments
will require 2GB for some of the benchmarks in the suite. More
memory will be needed if you run multi-copy SPECrates: generally 1GB
for 32-bit, or 2GB for 64-bit, for each copy you plan to run.
So it very well may require > 2GB of memory for that dataset.
Also, the nominal run time listed for bwave with the normal input set
is ~1.25 hours. Given the extreme slow-down of simulation, it would be
nearly impossible to simulate the normal input set.
Ali
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