[Gems-users] failed Simics session upon Ruby init

[Adam Kaplan <kaplan@xxxxxxxxxxx>]

Hello all.  I'm trying to get Gems-1.3 running with Simics-3.0.18.  After
successfully building Opal and Ruby, as per the online wiki
documentation, I tried a simple simulation from a booted-Solaris
checkpoint (as per the QuickStart guide).  Here is the output of that
Simics session, which died when Ruby was initialized.  I built Ruby to
use the MOSI_SMP_bcast protocol, as per the guide.  I tried again
(with memory sizes of 256MB, 512MB, 1 GB, and the default of 4 GB), but
to no avail.  I'm under the impression that the checkpoint has a memory
size of 256MB, as per its map (see below).  Any ideas or additional
things to try would be most appreciated.  Thanks for your time!

simics> read-configuration ../../targets/serengeti/kap-abisko-sol8-afterboot.conf

simics> phys_mem.map
base               object               fn offs               length
0x0000000000000000 memory                0 0x0                0x10000000
0x000007fff07ffff0 simicsfs              0 0x0                0x10

simics> instruction-fetch-mode instruction-fetch-trace
[cpu0 info] Note that on this cpu, instruction-fetch-trace is implemented
using instruction-cache-access-trace with a suitable cache line size.

simics> istc-disable
Turning I-STC off and flushing old data

simics> dstc-disable
Turning D-STC off and flushing old data

simics> load-module ruby
successful installation of the ruby timing model.

simics> load-module opal
Queue registration cpu0
successful installation of the opal queue.
hfa_init_local done:

simics> ruby0.setparam g_NUM_PROCESSORS 1

simics> ruby0.setparam g_MEMORY_SIZE_BYTES 268435456

simics> ruby0.init
Ruby Timing Mode
Warning: optimizations not enabled.
Creating event queue...
Creating event queue done
Creating system...
  Processors: 1
Creating system done
Ruby: ruby-opal link established. removing timing_model.
Segmentation fault (SIGSEGV) in main thread
The simulation state has been corrupted. Simulation cannot continue.
Please restart Simics.

					-Adam