Wednesday, 2019-10-09

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mithroThere are a bunch of potentially interesting things at https://github.com/OpenCAPI/omi_host_fire/tree/master/verilog03:45
tpbTitle: omi_host_fire/verilog at master · OpenCAPI/omi_host_fire · GitHub (at github.com)03:45
mithroThey have a bunch of (simple) models for bram / dram / etc03:47
mithroThey also use `(* ram_style = "block" *)`03:48
mithroAnd a few other attributes like that...03:49
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hackerfoolitghost: Is 0 a valid rr_node index?19:36
litghosthackerfoo: So be?  At the end of the day it is just an array index?19:36
litghostShould*19:36
hackerfooError 1:19:37
hackerfooType: Routing19:37
hackerfoo...(truncated)19:37
litghost?19:43
hackerfooThe type isn't weird, it's a SINK (1)19:48
litghostSorry, you message was truncated, so nothing you sent actually is visible19:49
hackerfooI guess I'll just filter nodes out without a canonical location for now.19:49
hackerfooThe error was: No canonical location of node 019:49
litghostThat is a bug in the routing import or create edges19:49
hackerfooOn line 306 of connection_box_lookahead_map.cpp in run_dijkstra19:50
hackerfooI'm using arch-defs-master19:51
hackerfooI mean master of arch-defs19:51
litghostwhich graph?19:51
litghostbasys3-roi?19:51
hackerfooYes.19:55
hackerfoohttps://github.com/HackerFoo/hackerfoo-go-functions/commit/001c4a70141daf63451ee600eeaf8a04f89ae2a819:57
tpbTitle: add lookahead · HackerFoo/hackerfoo-go-functions@001c4a7 · GitHub (at github.com)19:57
litghostWhat is the wire name(s) for rr node 0?19:58
hackerfooI'm not sure how to get that.20:04
hackerfooHere's the XML: <node capacity="1" id="0" type="SINK"><loc ptc="0" xhigh="10" xlow="10" yhigh="18" ylow="18"/><timing C="0.0" R="0.0"/></node>20:04
hackerfooI got a KeyError from prjxray_lookup_inode.py20:06
hackerfooOh yeah, only works for IPINs and OPINs IIRC.20:08
litghostSo follow the SINK back to the IPIN, and then check20:09
hackerfooThe IPIN is 1, also a KeyError, and that connects to a CHANX (545569).20:12
* hackerfoo sent a long message: < http://sandbox.hackerfoo.com:8008/_matrix/media/v1/download/sandbox.hackerfoo.com/ftpZhnMLkiJgyTiFVqsTFlfW >20:12
litghosthackerfoo: What block type does rr node 0 and 1 belong too?  If it's the VCC or GND it might explain why it not in the lookup, but not why it is missing an canonical location, as that should be set here: https://github.com/SymbiFlow/symbiflow-arch-defs/blob/master/xc7/utils/prjxray_form_channels.py#L136920:20
tpbTitle: symbiflow-arch-defs/prjxray_form_channels.py at master · SymbiFlow/symbiflow-arch-defs · GitHub (at github.com)20:20
hackerfooI don't know, without spending significant time on it. Should I create an issue?20:52
litghost?20:53
litghostWhat requires significant time?20:53
hackerfooFinding the block type of the rr nodes.21:01
hackerfooI found that StartNode used to filter ndoes without a canonical location, so I'll just filter them out as we did before.21:02
litghostFinding the block type of the rr nodes should be one or two grep's on the formatted XML, so it shouldn't take too long21:09
litghostAll nodes should have a canonical location, otherwise we may get strange sampling holes21:09
hackerfooGrepping for single digit numbers doesn't work so well.21:16
hackerfooThe CHANX is: <canonical_loc x="11" y="17"/>21:17
hackerfoo0 and 1 don't have a canonical_loc21:19
litghostgrep "grid_loc x=\"10\" y=\"18\"" a.xml ?21:21
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