Running RCCE v1.0.13 emulator issues

I tried the emulator for 1.0.13 on Linux with gcc (actually g++ but on my Ubuntu it's the same).

I see it working fine, but I had to add the -emulator switch to rccerun. Now I know that the docs say that -emulator is the default when you buld with the emulator, but rcce 1.0.13 is an old version. The emulator is broken in the trunk, and that is the main thing holding up rcce 1.1.

I have not yet tried the emulator on a non-Linux platform. I understand that you are using Win 7/cygwin. I don't have cygwin installed on my laptop, but if this is still an issue with you, then I will.

Here's how I ran the "simplest Hello World in the world." I'm not seeing that strange issue you've seen with "Hello World" being printed only once.

tkubasx@marc101:~/sandbox/RCCE_V1.0.13/apps/HELLO$ rccerun -emulator -nue 2 -f ../../hosts/rc.hosts hello
hello 2 0.533 00 01
hello from RCCE
hello from RCCE
tkubasx@marc101:~/sandbox/RCCE_V1.0.13/apps/HELLO$ rccerun -emulator -nue 2 -f ../../hosts/rc.hosts hello
hello 2 0.533 00 01
hello from RCCE
hello from RCCE
tkubasx@marc101:~/sandbox/RCCE_V1.0.13/apps/HELLO$ rccerun -emulator -nue 2 -f ../../hosts/rc.hosts hello
hello 2 0.533 00 01
hello from RCCE
hello from RCCE
tkubasx@marc101:~/sandbox/RCCE_V1.0.13/apps/HELLO$ rccerun -emulator -nue 2 -f ../../hosts/rc.hosts hello
hello 2 0.533 00 01
hello from RCCE
hello from RCCE

tkubasx@marc101:~/sandbox/RCCE_V1.0.13/apps/HELLO$

I can also run pinpong.

I built rcce as follows ....

   ./configure emulator

   ./makeall

   cd apps/PINGPONG

   make

The I ran pingpong as

tkubasx@marc101:~/sandbox/RCCE_V1.0.13/apps/PINGPONG$ rccerun -emulator -nue 2 -f ../../hosts/rc.hosts pingpong
pingpong 2 0.533 00 01
32  0.000000739
32  0.000000735

:

:

2965792  0.001312684
3526944  0.001710459
tkubasx@marc101:~/sandbox/RCCE_V1.0.13/apps/PINGPONG$

When I do not put the -emulator switch in, I see a hang.

Actually not a hang ... I get the following error but it just took a long time.

tkubasx@marc101:~/sandbox/RCCE_V1.0.13/apps/HELLO$ rccerun  -nue 2 -f ../../hosts/rc.hosts hello
pssh -h PSSH_HOST_FILE.7236 -t -1 -p 2 /home/tkubasx/sandbox/RCCE_V1.0.13/apps/HELLO/mpb.7236 < /dev/null
[1] 15:23:15 [FAILURE] rck00 Exited with error code 255
[2] 15:23:15 [FAILURE] rck01 Exited with error code 255
pssh -h PSSH_HOST_FILE.7236 -t -1 -P -p 2 /home/tkubasx/sandbox/RCCE_V1.0.13/apps/HELLO/hello 2 0.533 00 01 < /dev/null
[1] 15:23:36 [FAILURE] rck00 Exited with error code 255
[2] 15:23:36 [FAILURE] rck01 Exited with error code 255
tkubasx@marc101:~/sandbox/RCCE_V1.0.13/apps/HELLO$

I redid the example and ensured that I was using the same rccerun. You are correct ... I may have been using a more recent rccerun. But I don't see any errors using the 1.0.13 rccerun ... as shown below. Did you put rccerun in your path?

Of course, this is Linux not Win7/cygwin. We'll set up a Win7/cygwin system here locally to test the emulator on, hopefully by next week. We haven't seen reported problems with the emulator, but then most people use it on Linux.

$export PATH=.:/home/tkubasx/sandbox/RCCE_V1.0.13:$PATH
$echo $PATH
.:/home/tkubasx/sandbox/RCCE_V1.0.13:/home/tkubasx/bin:.:/home/tkubasx/bin:/home/tkubasx/sandboxJF/rcce:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/opt/sccKit/1.3.0/bin
$cd sandbox
$cd RCCE_V1.0.13/
$ls
apps  build_stress_test  configure  hosts    makeall   man      README           sourcing  utils
bin   common             COPYING    include  Makefile  rccerun  run_stress_test  src

$which rccerun
/home/tkubasx/sandbox/RCCE_V1.0.13/rccerun

$rccerun -nue 2 -f ../../hosts/rc.hosts hello
hello 2 1.0 00 01
hello from RCCE
hello from RCCE

I can run this many times and see the same result.

$rccerun -nue 2 -f ../../hosts/rc.hosts pingpong
pingpong 2 1.0 00 01
32  0.000000740
32  0.000000736

:

2493920  0.001060648
2965792  0.001343287
3526944  0.001673127

$

I recently encountered similar issues with pingpong:

Running pingpong from the shell (/bin/bash) succeeded.

Running it from within a makefile failed.

The reason was, that make uses /bin/sh as shell which

(by default) provides different amounts of memory.

The memory for buffer[] is taken from the stack (once per UE).

I don't know how to set maximum stack size for sh

but for bash one can use:

  ulimit -s <stack size in kB>

Setting the stack size to (a bit more) than

4MB per UE should be enough to make pingpong run.

The tool ulimit also has the option of setting stack size to "unlimitted"

but that actually appeared to provide less memory

(It let pingpong fail). The default stack size may depend

on some system specific setting: I you are using a different shell

you will probably have to use a different tool

to set the stack size large enough...

Ohn,

Is this what you are doing ... running pingpong from within the Makefile?

If I add the rccerun line to the Makefile as follows ...

pingpong: $(PINGPONGOBJS) Makefile
        $(CCOMPILE) -o pingpong $(PINGPONGOBJS) $(CFLAGS)
        rccerun -nue 2 -f ../../hosts/rc.hosts pingpong

then I get the error

g++ -o pingpong RCCE_pingpong.o  /home/tkubasx/sandbox/RCCE_V1.0.13/bin/OMP/libRCCE_bigflags_nongory_nopwrmgmt.a -O3 -fopenmp    -I/home/tkubasx/sandbox/RCCE_V1.0.13/include
rccerun -nue 2 -f ../../hosts/rc.hosts pingpong
pingpong 2 1.0 00 01
/home/tkubasx/sandbox/RCCE_V1.0.13/rccerun: line 183: 10934 Segmentation fault      $EXE $ARGS
make: *** [pingpong] Error 139

If I take out the rccerun from the Makefile and run it from the command line, it works fine.