Re: Octave and MPITB compile

[Javier Fernández]

address@hidden wrote:
>    8. Octave and MPITB compile (Jack Franklin)
>    9. Octave and MPITB compile (Jack Franklin)
> ------------------------------------------------------------------------
> Subject: Octave and MPITB compile
> From: "Jack Franklin" <address@hidden>

"study". is included in your e-mail address :-) That's nice

> [...]
> -bash-3.00$ make
> input in flex scanner failed
> input in flex scanner failed
> touch Makefile
> input in flex scanner failed
> input in flex scanner failed

I don't know the flex errors. Have no clue.

> touch IMPI_CLIENT_COLOR.cc
> g++ -c -fPIC -mieee-fp -g -O2  -Wall 
> -I/HOME/new_mpitb_octave/octave/include/octave-2.9.12 
> -I/HOME/new_mpitb_octave/octave/include/octave-2.9.12/octave 
> -I/HOME/new_mpitb_octave/octave/include  IMPI_CLIENT_COLOR.cc -o 
> IMPI_CLIENT_COLOR.o

I can't see the -I<mpi include dir> flag. The Makefile.inc should have 
generated it (MPIINCFLAGS below) with the following lines (extracted 
from the file):

> MPICC  = mpiCC
> [...]
> #MPIINCDIR  :=  $(shell $(MPINFO) -path incdir -parsable | cut -d: -f3)
> #MPIINCFLAGS =-I$(MPIINCDIR)
> [...]
>  MPIINCFLAGS:=  $(shell $(MPICC) --showme:compile)
> [...]
> INCFLAGS = $(OCTINCFLAGS) $(MPIINCFLAGS)


INCFLAGS is later used in the .cc.o rule in Makefile (extracted below):

> $(MPIOBJS): %.o: %.cc
>         $(CXX) -c $(CXXFLAGS) $(INCFLAGS) $< -o $@

Your "make" should support $(shell) commands. Perhaps the flex error is 
related to that.

> g++ -shared -Wl,-Bsymbolic  IMPI_CLIENT_COLOR.o -o IMPI_CLIENT_COLOR.oct 
> -L/HOME/new_mpitb_octave/octave/lib/octave-2.9.12  -L -loctinterp 
> -loctave -lcruft -llapack -lblas  -lreadline -lncurses -ldl -lz -lm 
> -L/usr/lib/gcc/i386-redhat-linux/3.4.6 
> -L/usr/lib/gcc/i386-redhat-linux/3.4.6/../../.. -lz -lfrtbegin -lg2c 
> -lm    -lmpi

I can see an empty -L<mpi lib dir> flag. I guess that's the value for 
MPILFLAGS computed by Makefile.inc:

>  MPINFO     =          ompi_info
>  MPILIBDIR :=   $(shell $(MPINFO) -path libdir -parsable | cut -d: -f3)
>  MPILFLAGS  = -L$(MPILIBDIR)

An empty -L flag could be a perfect reason for your next error:

> /usr/bin/ld: cannot find -lmpi
> collect2: ld returned 1 exit status
> make: *** [IMPI_CLIENT_COLOR.oct] Error 1

There is no mpi library in your -L path (or system ld path). Of course 
there is not. Fix your system so the $(shell) commands work again. 
Ayways, I think you said you are working on an IBM Blue/Gene. I find it 
difficult to believe you have been abandoned in front of such a beast 
with no sysadmin who can fix these things for you. Not only fix the 
$(shell) issue, but also _study_ Nils' port of MPITB to MPICH-BG/L and 
install it alltogether.

In other words, there is no use in fixing the $(shell) issue, only to 
later learn you should also have compiled with ESSL library and OpenMP 
stubs and MASS library (no clue about these either, I'm only 
copy-pasting from Nils' instructions).
http://www.pdc.kth.se/systems_support/computers/bluegene/bgloctave/mpitb-octave-on-bgl

-javier