Displaying 3 results from an estimated 3 matches for "prepen".
Did you mean:
preen
2008 Feb 08
2
Catching NaNs from pweibull()
...ull function is annoyingly
producing NaNs, which nls() refuses to handle. I have put a sample of the
code below. Is there a way to prevent these NaNs from interfering, for
example a method to catch them? I get the following error when I try to run
the code:
res.nls <- nls(cumsumcaught ~
Pcatch*Prepens.released*(1-pweibull(distances,k,l)),
+ start = list(k=1,l=12), trace=T, control = my.control)
Error in numericDeriv(form[[3]], names(ind), env) :
Missing value or an infinity produced when evaluating the model
In addition: Warning messages:
1: NaNs produced in: pweibull(q, shape, scale,...
2017 Mar 01
0
[RFC] packed (virtio-net) headers
...other issue: it introdues
> an extra cache line visit.
So if we don't care about this part, we could maybe just add
a descriptor flag that puts the whole header in the descriptor.
> - virtio-net header could be scattered
>
> Assume the ANYLAY_OUT case, whereas the headered is prepened before
> each mbuf (or skb in kernel). In DPDK, a burst recevice in vhost pmd
> means 32 different cache visit for virtio header.
>
> For the legacy layout and indirect desc, the cache issue could somehone
> diminished a bit: we could arrange the virtio header in a same me...
2017 Mar 01
0
[RFC] packed (virtio-net) headers
...other issue: it introdues
> an extra cache line visit.
So if we don't care about this part, we could maybe just add
a descriptor flag that puts the whole header in the descriptor.
> - virtio-net header could be scattered
>
> Assume the ANYLAY_OUT case, whereas the headered is prepened before
> each mbuf (or skb in kernel). In DPDK, a burst recevice in vhost pmd
> means 32 different cache visit for virtio header.
>
> For the legacy layout and indirect desc, the cache issue could somehone
> diminished a bit: we could arrange the virtio header in a same me...