> Perhaps you should use uDAPL/kDAPL ( http://www.datcollaborative.org/ ).
> It's more documented and it's more portable. It works with Infiniband and
> iWARP
> (http://en.wikipedia.org/wiki/IWARP).
Oh no!!
First of all I don't know of any kDAPL implementation for any OS that
is still being developed. Everyone completely gave up on kDAPL a long
time ago.
And if all you care about is being able to work on top of IB and
iWARP, then libibverbs + librdmacm works perfectly fine without having
to add another layer and all the complexity of DAPL. And you don't
have to worry about code like (from dapl/common/dapl_cookie.c):
new_head = (dapl_os_atomic_read (&buffer->head) + 1) % buffer->pool_size;
if ( new_head == dapl_os_atomic_read (&buffer->tail) )
{
dat_status = DAT_INSUFFICIENT_RESOURCES;
goto bail;
}
else
{
dapl_os_atomic_set (&buffer->head, new_head);
*cookie_ptr = &buffer->pool[dapl_os_atomic_read (&buffer->head)];
dat_status = DAT_SUCCESS;
}
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