Hi Tim, Before I try to help you with your specific problem, I want to point out that is Ruby's current support for checkpointing is a little confusing and that is one area that we are actively improving. In particular Ruby currently uses physmem as a functional memory image and thus messages within Ruby only impact the timing of memory accesses. Thus, loading a checkpoint with Ruby is nothing more than loading Ruby's backing image of physmem with the checkpointed memory image. Also there is no current support for cache warmup. We are in the process of changing that, but that code is not yet ready.
Having said that, I suspect that your problem is something different. In general, your sequence of commands should work and I can't reproduce your specific error since I don't have your particular rcS script. I'd be curious to know if you see any unserialzation warnings complaining that certain simobjects aren't in the loaded checkpoint. In particular, do the cpus have the exact same name between the config.ini file with ruby and the m5.cpt file in your checkpoint? Sorry I can't be more help, but if you send me your rcS script, I'd be happy to investigate further. Brad > -----Original Message----- > From: [email protected] [mailto:m5-users- > [email protected]] On Behalf Of Timothy M Jones > Sent: Wednesday, May 04, 2011 5:49 AM > To: M5 users mailing list > Subject: [m5-users] Creating ruby checkpoints > > Hello, > > I'm trying to create checkpoints for use with ruby using ALPHA_FS. It takes > ages to boot linux with ruby enabled, and since I want several checkpoints > for different numbers of cores, I was hoping I'd be able to create checkpoints > without ruby, then run from the checkpoints with. > This doesn't appear to work. If I create a checkpoint with this command: > > ./build/ALPHA_FS/m5.fast -d ../outputs --remote-gdb-port 0 > ./configs/example/fs.py -n 2 --max-checkpoints=1 -- > script=../scripts/runscript.rcS > > Then I can run it fine with this command: > > ./build/ALPHA_FS/m5.fast -d ../outputs --remote-gdb-port 0 > ./configs/example/fs.py -n 2 -r 0 > > But switching to ruby causes errors: > > /build/ALPHA_FS/m5.fast -d ../outputs --remote-gdb-port 0 > ./configs/example/ruby_fs.py -n 2 -r 0 > > In the system.terminal file I get this error output: > > script(759): unhandled unaligned exception pc = [<fffffc00006b83c0>] ra = > [<fffffc00006b83bc>] ps = 0007 > r0 = 000000001f6c8000 r1 = fffffc00003111a0 r2 = fffffc0000018000 > r3 = 000000000000002b r4 = 0000000000000720 r5 = fffffc000085ecb8 > r6 = 0000000000000059 r7 = 0000000000000040 r8 = 0000000000003fff > r9 = fffffc001f5c5580 r10= fffffc001f3eec00 r11= fffffc0000d09b80 r12= > fffffc001f6b0740 r13= 0000000000000001 r14= 0000000000000008 r15= > fffffc001f657e48 r16= 000000001f654000 r17= fffffc001f3eec00 r18= > fffffc001f6b0740 r19= 0000000000000001 r20= 0000000000000000 r21= > fffffc0000860640 r22= 0000000000000000 r23= 000000200618a0cf r24= > 4000000000000000 r25= 00000000000003ff r27= fffffc0000311190 r28= > fffffc001f5c5580 > > This seems to happen no matter which protocol I compile into the binary, > although this was with MESI_CMP_directory. Does anyone have any > suggestions as to how I can go about creating some checkpoints to use like > this or what I'm doing wrong? > > Thanks > Tim > > -- > Timothy M. Jones > http://www.cl.cam.ac.uk/~tmj32 > _______________________________________________ > m5-users mailing list > [email protected] > http://m5sim.org/cgi-bin/mailman/listinfo/m5-users _______________________________________________ m5-users mailing list [email protected] http://m5sim.org/cgi-bin/mailman/listinfo/m5-users
