go1.5.2, linux/amd64, Building packages ... fatal error: procresize: invalid arg

[jpicau]

I'm trying to compile/install the go1.5.2 compiler on a SGI NUMA hardware running SUSE Linux Enterprise Server 11 (x86_64). I installed the go1.4.3 compiler before. It passed all tests. Then I set the GOROOT_BOOTSTRAP variable and ran ./all.bash.

Unfortunately, the proccess fails while

Building go_bootstrap for host, linux/amd64.

...
with

Building packages and commands for linux/amd64.

fatal error: procresize: invalid arg

runtime stack:
runtime.throw(0x7a6c00, 0x17)
/home/jpi/bin/go1.5/src/runtime/panic.go:527 +0x90
runtime.procresize(0x240, 0x0)
/home/jpi/bin/go1.5/src/runtime/proc1.go:2713 +0xb0f
runtime.schedinit()
/home/jpi/bin/go1.5/src/runtime/proc1.go:72 +0x110
runtime.rt0_go(0x7fffffffdf88, 0x9, 0x7fffffffdf88, 0x0, 0x0, 0x9, 0x7fffffffe394, 0x7fffffffe3ca, 0x7fffffffe3d2, 0x7fffffffe3db, ...)
/home/jpi/bin/go1.5/src/runtime/asm_amd64.s:109 +0x132

Has anyone an idea what is going wrong? Thanks!

[bradfitz]

How many processors?

[jpicau]

jpi@hydra:~/bin/go1.5/src> cpumap
Mon Jan 11 16:47:42 CET 2016
hydra.informatik.uni-kiel.de

This is an SGI UV
model name : Intel(R) Xeon(R) CPU E5-4640 0 @ 2.40GHz
Architecture : x86_64
cpu MHz : 2400.240
cache size : 20480 KB (Last Level)

Total Number of Sockets : 36
Total Number of Cores : 288 (8 per socket)
Hyperthreading : ON
Total Number of Physical Processors : 288
Total Number of Logical Processors : 576 (2 per Phys Processor)

UV Information
HUB Version: UVHub 3.0
Number of Hubs: 44
Number of connected Hubs: 36

Number of connected NUMAlink ports: 416

[bradfitz]

The default limit is 256:

In src/runtime/runtime2.go:

const (
        // The max value of GOMAXPROCS.                                                                                                                                   
        // There are no fundamental restrictions on the value.                                                                                                            
        _MaxGomaxprocs = 1 << 8
)

Change that and recompile. Or set GOMAXPROCS=256.

[jpicau]

I changed it to:
jpi@hydra:~/bin/go1.5/src> grep MaxGomaxprocs runtime/runtime2.go
_MaxGomaxprocs = 512
allp [_MaxGomaxprocs + 1]*p

But still ...

Building packages and commands for linux/amd64.

fatal error: procresize: invalid arg

runtime stack:
runtime.throw(0x798690, 0x17)
/home/jpi/bin/go1.5/src/runtime/panic.go:527 +0x90
runtime.procresize(0x240, 0x0)
/home/jpi/bin/go1.5/src/runtime/proc1.go:2691 +0xb0f
runtime.schedinit()
/home/jpi/bin/go1.5/src/runtime/proc1.go:72 +0x110
runtime.rt0_go(0x7fffffffdf88, 0x9, 0x7fffffffdf88, 0x0, 0x0, 0x9, 0x7fffffffe394, 0x7fffffffe3ca, 0x7fffffffe3d2, 0x7fffffffe3db, ...)
/home/jpi/bin/go1.5/src/runtime/asm_amd64.s:109 +0x132

Thanks by the way!

[jpicau]

Sorry, it's too late. Now I changed it to 1024 and it works!

[jpicau]

Thanks a lot, Brad!