[openib-general] HCAs with and without memory

[somenath]

is there any performance difference observed between memFree and 
non-memFree HCAs?

thanks, som.

Dotan Barak wrote:

>Hi john.
>
>john t wrote:
>  
>
>>Hi OpenIB group,
>> 
>>What is the difference between HCAs with memory and without memory. 
>>How is the on-board memory used by HCAs? Is it that data is first 
>>copied into this memory and then into physical memory?
>> 
>>Regards,
>>John T.
>>    
>>
>
>If you are asking about Mellanox HCAs i can answer you:
>
>The difference is the technology which those HCAs are using:
>The HCAs without the attached memory are using the memfree technology.
>
>The main difference between the 2 HCAs is where the context of the 
>various resources is located: in the host memory or in the attached memory.
>
>The data itself (during data movement) is not stored in this memory at 
>any point in the attached memory.
>
>Dotan
>
>
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