[openib-general] Re: some questions: sdp/perftest/hyperthreading

[Michael S. Tsirkin]

Quoting r. umaxx <umaxx at oleco.net>:
> Subject: some questions: sdp/perftest/hyperthreading
> 
> Hello,
> 
> I have a couple of questions after playing around with OpenIB these
> days, hope you can help me.
> 
> 1. from userspace/libsdp/src/port.c:
> 
>     ...
>       printf("default libsdp configuration is used\n");
> #define LIBSDP_DEFAULT_CONFIG_FILE  "/usr/local/ibgd/etc/libsdp.conf"
>     __sdp_read_config(LIBSDP_DEFAULT_CONFIG_FILE);
>     ...
> 
> Why is LIBSDP_DEFAULT_CONFIG_FILE pointing to this location?
> Shouldn't this be something more useful like $sysconf?
> And maybe you can add a note to README / or a comment to 
> libsdp.conf - that it is possible to set the environment 
> variable LIBSDP_CONFIG_FILE?

Yes, that needs to be fixed. Patch?

> 3. In the SDP-slide
> (http://openib.org/docs/oib_wkshp_082205/das_SDP_Linux.pdf) from the
> workshop is a measurement with perftest on a Dual-Xeon with enabled HT
> done. Was there SMP-Support enabled in the kernel? 

Yes.

-- 
MST