Aha! Thanks so much, I will look into this. Cheers, Steffen Persvold Technical Director Americas tel. 508-281-7100 x401 fax. 508-281-7171
http://www.scali.com/ Scaling the Linux datacenter ________________________________ From: Roland Dreier [mailto:[EMAIL PROTECTED] Sent: Fri 6/8/2007 9:59 AM To: Steffen Persvold Cc: EWG; OpenFabrics General Subject: Re: [ofa-general] RE: [ewg] OFED 1.2 and backwards binary compatibility > 1.0 vs. 1.1 is all good. That works. I'm talking about 1.1/1.0 vs 1.2, > that's not working. The diffset below is between 1.1 and 1.2. Sorry for being confusing. I was talking about the libibverbs version. OFED 1.0 and 1.1 both included libibverbs 1.0, and OFED 1.2 includes libibverbs 1.1. > What we're doing is using dlopen()/dlsym() to dynamically open the library > so that we have no library dependencies (this allows us to runtime wise > check if ofed is installed or other IB stacks). This apparently breaks. Yes, you are basically implementing a broken dynamic linker yourself. For this to work you will need to use dlvsym() and request all symbols with version IBVERBS_1.0. There may be a slight performance penalty on libibverbs 1.1 (OFED 1.2) because you will be going through compatibility wrappers. > I don't find any "post_send_wrapper_1_0" nor "post_send_wrapper_1_1" symbols > in my libraries ?? : Right, they're internal symbols. Take a look at the libibverbs source if you're curious about how it works. - R.
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