[Gems-users] creating checkpoint with more than 8 cores (x86) with simics 4.2

[Byn Choi <bynchoi1@xxxxxxxxxxxx>]

Hello,

First I apologize for posting a non-GEMS question on the GEMS mailing  
list. This is strictly simics question, but I'm wondering if someone  
one this list has encountered this issue before and found a workaround/ 
fix.
I am trying to create a checkpoint with more than 8 cores using simics  
4.2, but it fails saying something like the following.
simics> $disk_image="gentoo.craff"
simics> $cpu_class="x86-hammer"
simics> $num_cpus=16
simics> $freq_mhz=2000
simics> $memory_megs=4096
simics> run-command-file targets/x86-440bx/tango-common.simics
Failed running 'create-processor-x86-hammer  
$system.motherboard.processor + $count freq_mhz = $freq_mhz cpi = $cpi  
use_vmp = $use_vmp': unknown command 'create-processor-x86-hammer'.
[x86-440bx-pci-system.include:49] error in 'exec' command
[tango-common.simics:7] error in 'run-command-file' command
[tango-common.simics:2] error in 'run-command-file' command
Error - interrupting script.
simics>

Trying the same with "num_cpus=8" works without a hitch.

I do have a bunch of checkpoints with 16/32/64 cores created using  
simics 3.0, but none of them were usable with simics 4.2 setup - it  
seems to fail during a conversion process due to agp subsystem (I  
guess simics 4.2's x86-440bx target does not use agp graphics  
subsystem anymore). This is why I'm trying to recreate those  
checkpoints using simics 4.2
Has anyone encountered this issue before?

Thanks,

---
Byn Choi
Ph.D. Candidate in Computer Science
University of Illinois, Urbana-Champaign