HECToR and Git

Having talked to Adrian today, I'm switching to HECToR from ECDF to do my benchmarking experiments. ECDF's turn-around time is just horrible (at least for me!), hopefully the national service will be better. First of all I am going to see how my C code scales on one 24-core die by running it on 1, 2, 4, 8, 16 and 24 cores. The largest number that shows linear or close enough to linear performance improvement will be used in future for distributed-memory experiments: e.g. if 8 cores on one node provide close to 8 times better performance than 1, and then it tails off at 16 and 24, I will use 8 cores per die for scaling experiments. Thus, if the maximum number of cores that I want to use to get an idea of my app's scaling properties is 100, then I will have to use 12 dies, using 8 cores per die (96 in total) and wasting 16 (192 in total).

At the moment I'm experiencing difficulties with installing git on hector. It won't compile, giving me the following message:

make
GIT_VERSION = 1.7.6
    * new build flags or prefix
    CC daemon.o
PGC-W-0095-Type cast required for this conversion (./git-compat-util.h: 254)
PGC-S-0137-Incompatible prototype declaration for function inet_ntop (./git-compat-util.h: 413)
PGC/x86-64 Linux 10.9-0: compilation completed with severe errors
make: *** [daemon.o] Error 2

looks like there's some problem with the C compiler. I tried changing the makefile to explicitly use gcc (it's said to build fine with it, not sure about other compilers. Besides, I managed to build it on ECDF without any trouble), but no luck. At the moment I'm trying out some voodoo stuff, if nothing works I'll just create a new svn repository for topographica and use it as version control between hector and jupiter.

[update] I think I slightly progressed. Specifying "gcc all" as CC option got me a bit further:

make CC=gcc all

Now most of it (I'd like to believe) compiles but breaks once it gets to http.o:

CC http.o
In file included from http.c:1:
http.h:6:23: error: curl/curl.h: No such file or directory
http.h:7:23: error: curl/easy.h: No such file or directory

and a giant bunch of errors after.

[update 2] Fantastic! The solution was found here. In particular, I set a few environment variables:

NO_CURL=1 NO_EXPAT=1 NO_SVN_TESTS=1 NO_TCLTK=1 make CC=gcc all 

Make completes without errors now all that's left is make install.....

NO_CURL=1 NO_EXPAT=1 NO_SVN_TESTS=1 NO_TCLTK=1 make CC=gcc all install

and ...

git --version
git version 1.7.6

feels good :)