Re: [Gems-users] MESI_SCMP_ protocol crush

["Konstantinos Aisopos" <kaisopos@xxxxxxxxx>]

Hello again,

any ideas about my problem? any idea what this assertion prevents from
happening? Should I provide you more information? Does the MESI_SCMP
require any other parameters to be set that I don't know??

I thought it was a topology problem so I created the file:
ruby/network/simple/Network_Files/NUCA_Procs-64_ProcsPerChip-64_L2Banks-64_Memories-64.txt
and set these parameters:
ruby0.setparam_str g_CACHE_DESIGN NUCA
ruby0.setparam_str g_NETWORK_TOPOLOGY FILE_SPECIFIED
... the problem still persists. I got rid of opal to make the
simulation simpler. problem persists. Also, if i don't load ruby the
simulation works fine.

help please :P

-Kostas


On Thu, Mar 27, 2008 at 10:54 PM, Konstantinos Aisopos
<kaisopos@xxxxxxxxx> wrote:
> Hi list,
>
> I am using MESI_SCMP_bankdirectory protocol to simulate a 64core
> system. I haven't touched the protocol or the simulator. I am
> executing the following script:
>
> instruction-fetch-mode instruction-fetch-trace
> istc-disable
> dstc-disable
> cpu-switch-time 1
> load-module ruby
> load-module opal
> ruby0.setparam g_NUM_PROCESSORS 64
> ruby0.setparam g_PROCS_PER_CHIP 64
> ruby0.setparam g_NUM_L2_BANKS 64
> ruby0.setparam g_NUM_MEMORIES 64
> ruby0.setparam NUMBER_OF_VIRTUAL_NETWORKS 5
> ruby0.setparam g_MEMORY_SIZE_BYTES 4294967296
> ruby0.setparam g_endpoint_bandwidth 1000
> ruby0.init
> opal0.init
> opal0.sim-start "results.opal"
> opal0.sim-step 10000000000
>
> and i am getting the following error, when i execute "opal0.sim-step
> 10000000000":
>
> Runtime Error at ../protocols/MESI_SCMP_bankdirectory-L2cache.sm:224,
> Ruby Time: 23: assert failure, PID: 1335
>
> the 224 line is:
> assert(map_L1CacheMachId_to_L2Cache(addr,requestor) == machineID)
>
> any idea what might be wrong?
>
> thanks,
>
> Kostas
>