I don't think I understand all this 64-bit stuff at all now. I am using J64 for Linux on 64 bit Ubuntu on VMWare fusion on Leopard on a 2GB Mac Book Pro. I thought that by using J64 I would be able to work with arrays of much larger size because the Virtual Address Space would be larger.
But I get this: #i.2^24 16777216 #i.2^30 |out of memory | # i.2^30 When I try to use mapped files... require 'jmf files dir' NB. This works size =. 65536 bigfn =. jpath '~temp\big.jmf' createjmf_jmf_ bigfn;(size) map_jmf_ 'bigvar';bigfn bigfun =: i.size unmap_jmf_ 'bigvar' NB. This does not work, but I cannot see why since 65536=2^16 size =. 2^16 bigfn =. jpath '~temp\big.jmf' createjmf_jmf_ bigfn;(size) map_jmf_ 'bigvar';bigfn bigfun =: i.size unmap_jmf_ 'bigvar' NB. When I try to make a really big mapped file, I get an error. but I thought the VAS on J64 was 2^64? NB. This only tries to make a 2GB mapped file (only 2^32) but does not work. size =. 2147483648 bigfn =. jpath '~temp\big.jmf' createjmf_jmf_ bigfn;(size) map_jmf_ 'bigvar';bigfn bigfun =: i.size unmap_jmf_ 'bigvar' NB. the error is: map_jmf_ 'bigvar';bigfn |bad jmf header: assert | 'bad jmf header' assert 0[free fh,mh,fad Have I just completely missed the point of 64-bit VAS? Should I be able to create size 2^32 byte mapped files using J64? When a command results in "out of memory", does that mean it is out of RAM or out of VAS? My edit->configure->parameters->memory limit is set to 2^62. Do I need to set some other parameters in Ubuntu to allow J to use more VAS? Thanks, Matthew. 2008/11/15 Matthew Brand <[EMAIL PROTECTED]>: > Thanks for the help guys. I think the problem is that VirtualBox does > not support 64 bit guests on the Mac yet. Let's hope they sort it out > soon? > > I have installed a trial copy of VMWare fusion and have managed to get > J64 working on ubuntu. Hooray! :-). > > Issues I ran into, in case anyone else tries it this way: > > 1) The macBook Pro keyboard is not properly recognised, so I did the > things advised on this page > http://ubuntuforums.org/showthread.php?t=959249 . > > I installed xkbset: > > sudo apt-get install xkbset > > and appended the following to .bashrc: > > xmodmap -e "keycode 94 = grave asciitilde" > xmodmap -e "keycode 133 = ISO_Level3_Shift" > xmodmap -e "keycode 134 = Multi_key" > xmodmap -e "keycode 108 = Pointer_Button3" > xkbset m > > > 2) java64 had to be created: > sudo ln /usr/bin/java /usr/bin/java64 > > 64-bit jconsole and jwd work for me now start for me now. If I don't > run into any problems then I will buy a copy of VMWare fusion when the > trial runs out. It is pretty slick and only costs ~￡50. > > Cheers, > Matthew. > > 2008/11/15 bill lam <[EMAIL PROTECTED]>: >> On Fri, 14 Nov 2008, Matthew Brand wrote: >>> I have managed to get Damn Small Linux (DSL) working, but it complains >>> that the Jconsole binary cannot be executed. I tried to install Java >>> on it, but gave up after an hour. Then I installed Arch Linux 64, but >>> could not get it to connect to the internet. Ubuntu complains that the >>> kernel is for x86 rather than i686 so that does not work, I cannot >>> find an Ubuntu which has got the i686 kernel. >> >> virtualbox only started to support 64-bit guest recently. My >> experience is that it works but not very well. DSL uses a rather >> outdated kernel 2.24 iirc. Arch Linux is meant for hackers, its >> installation stops after setting up enough to allow to you login a tty >> console. You have to manually set up various conf files yourself. I >> guess that ubuntu said it needs a "x86_64" which means a 64-bit cpu >> rather than "i686" (32-bit). So did you actually install a 64-bit >> version of virtualbox on a 64-bit os running on a 64-bit cpu? >> >>> What is involved in making a 64 bit J64 bit binary for the Mac anyway? >>> Is it possible to just put the source code onto a 64 bit mac and press >>> compile/build to make a dmg file and upload it to the download page >>> for J? >> >> Might be Eric did not get a macbook with 64-bit os to play with, or >> you might contact [EMAIL PROTECTED] as mentioned in the download >> page. >> >> -- >> regards, >> ==================================================== >> GPG key 1024D/4434BAB3 2008-08-24 >> gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3 >> 唐詩105 杜甫 月夜 >> 今夜鄜州月 閨中只獨看 遙憐小兒女 未解憶長安 >> 香霧雲鬟濕 清輝玉臂寒 何時倚虛幌 雙照淚痕乾 >> ---------------------------------------------------------------------- >> For information about J forums see http://www.jsoftware.com/forums.htm >> >
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