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<p class="MsoNormal"><span style="font-size:11.0pt">Thanks for the info - I'll try to reproduce on my end.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">As for simplenet - "startup" specifically represents a fixed per-packet transmission cost from the sender side. As compared to the loggp model, it most closely represents the overhead parameter "o". It essentially
rate-limits the message rate from the source. The source for this is in src/networks/model-net/simplenet-upd.c, under "handle_msg_start_event" (the receiver event is handle_msg_ready_event).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">John<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="color:black">From: </span></b><span style="font-family:"MS Mincho";color:black">于雷（</span><span style="color:black">Yu Lei</span><span style="font-family:"MS Mincho";color:black">）</span><span style="color:black"> <yulei@buaa.edu.cn></span><span style="font-family:MingLiU;color:black"><br>
</span><b><span style="color:black">Date: </span></b><span style="color:black">Friday, August 12, 2016 at 5:01 AM<br>
<b>To: </b>John Jenkins <jenkins@mcs.anl.gov>, "codes-ross-users@lists.mcs.anl.gov" <codes-ross-users@lists.mcs.anl.gov><br>
<b>Subject: </b>Re: [codes-ross-users] codes model net problems</span><span style="font-size:12.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Times New Roman","serif""><o:p> </o:p></span></p>
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<p>Hi John,<o:p></o:p></p>
<div>
<p class="MsoNormal">For example, this is the code in codes/doc/example_heterogeneous/example.c:<br>
void handle_forwarder_fwd(<br>
forwarder_state * ns,<br>
forwarder_msg * m,<br>
tw_lp * lp){<br>
// compute the forwarder lpid to forward to<br>
int mod;<br>
const char * dest_group;<br>
char * category;<br>
if (ns->is_in_foo){<br>
mod = num_bar_forwarders;<br>
dest_group = "BAR_FORWARDERS";<br>
category = "ping";<br>
}<br>
else{<br>
mod = num_foo_forwarders;<br>
dest_group = "FOO_FORWARDERS";<br>
category = "pong";<br>
}<br>
<br>
// compute the ROSS id corresponding to the dest forwarder<br>
tw_lpid dest_lpid = codes_mapping_get_lpid_from_relative(<br>
ns->id % mod, dest_group, "forwarder", NULL, 0);<br>
<br>
forwarder_msg m_fwd = *m;<br>
msg_set_header(forwarder_magic, FORWARDER_RECV, lp->gid, &m_fwd.h);<br>
// here, we need to use the unannotated forwarding network, so we<br>
// use the annotation version of model_net_event<br>
model_net_event_annotated(net_id_forwarding, "foo", category, dest_lpid,<br>
payload_sz, 0.0, sizeof(m_fwd), &m_fwd, 0, NULL, lp);<br>
<br>
ns->fwd_node_count++;<br>
}<br>
the sender lp is the forwarder in FOO_FORWARDERS,id is 26,dest_lpid id is 58,means the dest lp is the forwarder in BAR_FORWARDERS,they have same net type with different annotations.We We don't modify the code but the configuration file. We changed the type
of forwarder to two different types, they can still communicate. By the way, if we change the second parameter to "foo", "bar", or any string, model_net_event_annotated() can always run with success.<br>
<br>
<br>
For <span style="font-size:11.0pt">startup parameter in simplenet, what's the exact means of this parameter? Now we want to use simplenet to construct a complex network.<br>
<br>
Thanks,<br>
</span><br>
Lei<o:p></o:p></p>
</div>
<p class="MsoNormal"><span style="font-family:"MS Mincho"">在</span> 2016/8/8 22:10, Jenkins, Jonathan P.
<span style="font-family:"MS Mincho"">写道</span>:<br>
<br>
<o:p></o:p></p>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"><span style="font-size:11.0pt">Hi Yu,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Thanks for the information. Can you additionally send the argument used for the "annotation" variable in model_net_event_annotated?</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">In my previous answer to your second question, I meant that you should run that or a similar benchmark on a real (not simulated) system to get an accurate startup parameter for the system you are simulating.
Eventually you'd want to use something like the loggp model that IIRC we've talked about off-thread, but simplenet is at least a reasonable model to start with.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Thanks,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">John</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="color:black">From: </span></b><span style="font-family:"MS Mincho";color:black">于雷（</span><span style="color:black">Yu Lei</span><span style="font-family:"MS Mincho";color:black">）</span><span style="color:black">
<a href="mailto:yulei@buaa.edu.cn"><yulei@buaa.edu.cn></a></span><span style="font-family:MingLiU;color:black"><br>
</span><b><span style="color:black">Date: </span></b><span style="color:black">Saturday, August 6, 2016 at 10:58 PM<br>
<b>To: </b>John Jenkins <a href="mailto:jenkins@mcs.anl.gov"><jenkins@mcs.anl.gov></a>,
<a href="mailto:codes-ross-users@lists.mcs.anl.gov">"codes-ross-users@lists.mcs.anl.gov"</a>
<a href="mailto:codes-ross-users@lists.mcs.anl.gov"><codes-ross-users@lists.mcs.anl.gov></a><br>
<b>Subject: </b>Re: [codes-ross-users] codes model net problems</span><o:p></o:p></p>
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<div>
<p class="MsoNormal"><span style="font-family:"Times New Roman \, serif ""> </span><o:p></o:p></p>
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<p>Hi John,<o:p></o:p></p>
<p>Thanks for your response.<o:p></o:p></p>
<p> <o:p></o:p></p>
<p>For the first question, the configuration is as follows:<o:p></o:p></p>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt">LPGROUPS {<br>
## cluster foo<br>
FOO_CLUSTER {<br>
repetitions="12";<br>
node="1";<br>
modelnet_simplenet@foo="1";<br>
}<br>
FOO_FORWARDERS {<br>
repetitions="4";<br>
forwarder="1";<br>
modelnet_simplenet@foo="1";<br>
}<br>
## cluster bar<br>
BAR_CLUSTER {<br>
repetitions="12";<br>
node="1";<br>
modelnet_simplenet@bar="1";<br>
}<br>
BAR_FORWARDERS {<br>
repetitions="4";<br>
forwarder="1";<br>
modelnet_simplenet@bar="1";<br>
}<br>
}<br>
<br>
PARAMS {<br>
## ROSS parameters<br>
message_size="352";<br>
<br>
## global modelnet parameters <br>
modelnet_order=("simplenet");<br>
<br>
## foo cluster network parameters <br>
packet_size@foo="8192";<br>
modelnet_scheduler@foo="fcfs";<br>
net_startup_ns@foo="1.5";<br>
net_bw_mbps@foo="10000";<br>
<br>
## bar cluster network parameters<br>
packet_size@bar="2048";<br>
modelnet_scheduler@bar="round-robin";<br>
net_startup_ns@bar="3.0";<br>
net_bw_mbps@bar="15000";<br>
<br>
## forwarding network parameters<br>
packet_size="4096";<br>
modelnet_scheduler="fcfs";<br>
net_startup_ns="8.0";<br>
net_bw_mbps="5000";<br>
}<br>
<br>
run_params {<br>
num_reqs="5";<br>
payload_sz="16384";<br>
}<br>
<br>
FOO_FORWARDERS and BAR_FORWARDERS are two groups. The lps in these groups have the same type but have different annotations. we call model_net_event_annotated(<br>
int net_id,//SIMPLENET(0)<br>
char const * annotation,<br>
char const * category, <br>
tw_lpid final_dest_lp, //sender->gid is 26,final_dest_lp is 58<br>
uint64_t message_size, <br>
tw_stime offset,<br>
int remote_event_size,<br>
void const * remote_event,<br>
int self_event_size,<br>
void const * self_event,<br>
tw_lp *sender); <br>
<br>
Then we can achieve the communication between lp26 and lp58.<br>
<br>
For the second questions, is it possible that we use model_net_event() to establish a simple point-to-point connection and
<span style="font-size:11.0pt">we send messages 1M times and take the average?<br>
<br>
Thanks,</span><o:p></o:p></p>
</div>
<p class="MsoNormal">Lei<br>
<br>
<span style="font-family:"MS Mincho"">在</span> 2016/8/5 21:40, Jenkins, Jonathan P.
<span style="font-family:"MS Mincho"">写道</span>:<br>
<br>
<br>
<o:p></o:p></p>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"><span style="font-size:11.0pt">Hi Yu,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">You are correct that modelnet LPs with different annotations shouldn't be able to communicate through the modelnet interface. Can you send us the configuration file you are using, along with the net_id, annotation,
final_dest_lp, and sender->gid values for the call that misbehaves? We'll try to reproduce on our end.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">The startup parameter in simplenet represents local sender-side overhead on a packet granularity. So one way to estimate the startup is to get an average per-call time (on the sender side) of very small (word-sized)
messages. I.e. measure calling send(fd, buf, 8, flags) 1M times and take the average.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><br>
Thanks,<br>
John</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
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<p class="MsoNormal"><b><span lang="FR" style="color:black">From: </span></b><span lang="FR" style="color:black"><a href="mailto:codes-ross-users-bounces@lists.mcs.anl.gov"><codes-ross-users-bounces@lists.mcs.anl.gov></a> on behalf of
</span><span style="font-family:"MS Mincho \;color\:black "">于雷（</span><span lang="FR" style="color:black">Yu Lei</span><span style="font-family:"MS Mincho \;color\:black"">）</span><span style="color:black">
</span><span lang="FR" style="color:black"><a href="mailto:yulei@buaa.edu.cn"><yulei@buaa.edu.cn></a></span><span lang="FR" style="font-family:MingLiU;color:black"><br>
</span><b><span lang="FR" style="color:black">Date: </span></b><span lang="FR" style="color:black">Thursday, August 4, 2016 at 10:34 PM<br>
<b>To: </b><a href="mailto:codes-ross-users@lists.mcs.anl.gov">"codes-ross-users@lists.mcs.anl.gov"</a>
<a href="mailto:codes-ross-users@lists.mcs.anl.gov"><codes-ross-users@lists.mcs.anl.gov></a><br>
<b>Subject: </b>[codes-ross-users] codes model net problems</span><o:p></o:p></p>
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<p class="MsoNormal"><span lang="FR" style="font-family:"Times New Roman \, serif ""> </span><o:p></o:p></p>
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<p class="MsoPlainText"><span lang="FR">1/for the method:</span><o:p></o:p></p>
<p class="MsoPlainText"><span lang="FR">model_net_event_return model_net_event_annotated(<br>
int net_id,<br>
char const * annotation,<br>
char const * category, <br>
tw_lpid final_dest_lp, <br>
uint64_t message_size, <br>
tw_stime offset,<br>
int remote_event_size,<br>
void const * remote_event,<br>
int self_event_size,<br>
void const * self_event,<br>
tw_lp *sender);</span><o:p></o:p></p>
<p class="MsoPlainText"><span lang="FR"> </span><o:p></o:p></p>
<p class="MsoPlainText"><span lang="FR">we think that two lps with same network type but with different annotation can not communicate with this method. But we do some tests which prove that the communication can be established. We don't know why?</span><o:p></o:p></p>
<p class="MsoPlainText"><span lang="FR">2/for simplenet model, it needs a parameter "start_up". How can we obtain this parameter?</span><o:p></o:p></p>
<p class="MsoPlainText"><span lang="FR"> </span><o:p></o:p></p>
<p class="MsoPlainText"><span lang="FR">Thanks,</span><o:p></o:p></p>
<p class="MsoPlainText"><span lang="FR"> </span><o:p></o:p></p>
<p class="MsoPlainText"><span lang="FR">Lei</span><o:p></o:p></p>
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<p class="MsoNormal" align="left" style="text-align:left"><span style="font-size:12.0pt;font-family:"Times New Roman \, serif ""> </span><o:p></o:p></p>
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<p class="MsoNormal" align="left" style="text-align:left"><span style="font-size:12.0pt;font-family:"Times New Roman","serif""><o:p> </o:p></span></p>
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