[Ecls-list] Long time building of OpenAxiom with ECL 10.1.1

[Yue Li]

Hi,

I'm a user of OpenAxiom computer algebra system. Today I used ECL cvs
version (10.1.1) with multithreads enabled to build OpenAxiom. And I
found the building time is extremely long, which took me about 9
hours. Previous ecl without multithreads costs 2-3 hours. And here's
my machine specification:

processor	: 0
vendor_id	: AuthenticAMD
cpu family	: 15
model		: 107
model name	: AMD Athlon(tm) 64 X2 Dual Core Processor 4400+
stepping	: 2
cpu MHz		: 1000.000
cache size	: 512 KB
physical id	: 0
siblings	: 2
core id		: 0
cpu cores	: 2
apicid		: 0
initial apicid	: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 1
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat
pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp
lm 3dnowext 3dnow rep_good extd_apicid pni cx16 lahf_lm cmp_legacy svm
extapic cr8_legacy 3dnowprefetch
bogomips	: 2004.17
TLB size	: 1024 4K pages
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: ts fid vid ttp tm stc 100mhzsteps

processor	: 1
vendor_id	: AuthenticAMD
cpu family	: 15
model		: 107
model name	: AMD Athlon(tm) 64 X2 Dual Core Processor 4400+
stepping	: 2
cpu MHz		: 1000.000
cache size	: 512 KB
physical id	: 0
siblings	: 2
core id		: 1
cpu cores	: 2
apicid		: 1
initial apicid	: 1
fpu		: yes
fpu_exception	: yes
cpuid level	: 1
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat
pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp
lm 3dnowext 3dnow rep_good extd_apicid pni cx16 lahf_lm cmp_legacy svm
extapic cr8_legacy 3dnowprefetch
bogomips	: 2004.17
TLB size	: 1024 4K pages
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: ts fid vid ttp tm stc 100mhzsteps

It seems that by enabling multhreads gave a big slow down ;-(

Yue