6 ms·

Sorry for the slow response times on the challenge submissions everyone. We only have so many Mac Minis running these things . We are looking into ways to speed

Sorry for the slow response times on the challenge submissions everyone. We only have so many Mac Minis running these things . We are looking into ways to speed it up

nikai 13y ago
FWIW, Git Real 2 is working nicely at my place. I'm at level 2 now, looks great so far!
sjtgraham 13y ago
Looks like those Mac Minis are getting smoked right now, poor little guys. I can't load the page unfortunately to see myself, but could you use GNUStep to compile the examples on any flavour of box?
- rubymaverick 13y ago
  I know I feel so bad for them. We are working on some temporary fixes (including caching which as we all know is really easy to do) and changing the way we isolate the code submissions so we can get more throughput. GNUStep might be an interesting long term fix.
- deleted 13y ago
  [deleted]
rwl4 13y ago
Have you considered ccache? http://ccache.samba.org/ http://ccache.samba.org/ You could also roll your own in a very few lines of code. Maybe even have the output of the program, not the compiled code, be the content of the hashed file, assuming you aren't reading STDIN or anything like that from the user.
- rubymaverick 13y ago
  That's a really cool project! Definitely going to look into it for some of our more complicated courses, but for this course compilation is usually under a half-second so it's not the compilation that's slow (it's the way we are tearing down an entire VM after every submission, we are working on changing that now)
  - rwl4 13y ago
    Ah. Maybe consider a FreeBSD jail with a union mounted filesystem if you can get away with using a non-Apple (GNUstep/GCC?) toolchain. The teardown on a jail is as fast as the chroot syscall. ;-) Or even better, use ZFS snapshots as your sandbox. Copy on write kicks butt. See: http://vocalbit.com/article/402/freebsd-jails-using-zfs-and-bsdinstall http://vocalbit.com/article/402/freebsd-jails-using-zfs-and-...
    - nglevin 13y ago
      Just one nitpick for an excellent comment. GNUstep/Clang would be the only way to get support for array, dictionary and number literals, as well as ARC. GNUstep/GCC is possible, but you lose support for all of the above, blocks, and several other recent additions to the Objective-C language.
      - rubymaverick 13y ago
        Very true. We really leaned heavily on the new literals and ARC in this course.
jcromartie 13y ago
Could you use GNU Objective-C on Linux VMs, e.g. on AWS or something?
crossroads091 13y ago
In challenge # 22 in level 4, I am getting an error :‘extern’ variable has an initializer; I have tried the running the show answer solution but to no avail.

Sorry for the slow response times on the challenge submissions everyone. We only have so many Mac Minis running these things . We are looking into ways to speed it up

nikai 13y ago

FWIW, Git Real 2 is working nicely at my place. I'm at level 2 now, looks great so far!

sjtgraham 13y ago

Looks like those Mac Minis are getting smoked right now, poor little guys. I can't load the page unfortunately to see myself, but could you use GNUStep to compile the examples on any flavour of box?

rubymaverick 13y ago
I know I feel so bad for them. We are working on some temporary fixes (including caching which as we all know is really easy to do) and changing the way we isolate the code submissions so we can get more throughput. GNUStep might be an interesting long term fix.
deleted 13y ago
[deleted]

rwl4 13y ago

Have you considered ccache? http://ccache.samba.org/ http://ccache.samba.org/ You could also roll your own in a very few lines of code. Maybe even have the output of the program, not the compiled code, be the content of the hashed file, assuming you aren't reading STDIN or anything like that from the user.

rubymaverick 13y ago
That's a really cool project! Definitely going to look into it for some of our more complicated courses, but for this course compilation is usually under a half-second so it's not the compilation that's slow (it's the way we are tearing down an entire VM after every submission, we are working on changing that now)
- rwl4 13y ago
  Ah. Maybe consider a FreeBSD jail with a union mounted filesystem if you can get away with using a non-Apple (GNUstep/GCC?) toolchain. The teardown on a jail is as fast as the chroot syscall. ;-) Or even better, use ZFS snapshots as your sandbox. Copy on write kicks butt. See: http://vocalbit.com/article/402/freebsd-jails-using-zfs-and-bsdinstall http://vocalbit.com/article/402/freebsd-jails-using-zfs-and-...
  - nglevin 13y ago
    Just one nitpick for an excellent comment. GNUstep/Clang would be the only way to get support for array, dictionary and number literals, as well as ARC. GNUstep/GCC is possible, but you lose support for all of the above, blocks, and several other recent additions to the Objective-C language.
    - rubymaverick 13y ago
      Very true. We really leaned heavily on the new literals and ARC in this course.

jcromartie 13y ago

Could you use GNU Objective-C on Linux VMs, e.g. on AWS or something?

crossroads091 13y ago

In challenge # 22 in level 4, I am getting an error :‘extern’ variable has an initializer; I have tried the running the show answer solution but to no avail.