[Pvfs2-developers] BMI questions

[Scott Atchley]

Hi all,

A few quick questions:

1. Is there an upper bound on how many transfer operations between a  
pair of hosts at any one time (i.e. between a client and host)?

2. If there is a limit in the above and it is greater than 1, is that  
value the same for small (unexpected and some expected) messages and  
large (expected) messages? Or are large messages restricted to a  
lower value?

3. In the thread entitled "libpvfs2 usage", SamL mentioned the  
tunable called FlowBufferSizeBytes and that it is set to 256KB by  
default. Is this value the upper limit on large messages (i.e. 8KB <  
large messages <= FlowBufferSizeBytes assuming 8 KB is the maximum  
unexpected size)? Would the BMI method have any knowledge of what  
this value is (i.e. can it use FlowBufferSizeBytes to allocate large  
buffers)?

Thanks,

Scott