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3765 Commits

Author SHA1 Message Date
Robert Jördens 347609d765 rtio: auto clear output event data and address 
This is to support channels where variable length
event data is well-defined through zero-padding.
E.g. in the case of `Spline` zero-padding of events naturally
corresponds to low-order knots.

Use timestamp change as trigger. This assumes that writes to the
timestamp register always precede address and data writes.
It does not break support for ganged writes of the same event
timestamp and data/address to multiple channels or
channel-addresses.
 2016-11-23 15:03:36 +01:00
whitequark 4df7941a97 runtime: don't attempt to perform writeback if disabled in kernel. 
Otherwise, the startup kernel session hangs.
 2016-11-23 13:53:40 +00:00
whitequark cd7527b701 runtime: print trace level log messages to UART during startup. 
There's no way to retrieve them otherwise if the startup kernel
hangs.
 2016-11-23 13:53:40 +00:00
Sebastien Bourdeauducq 0443f83d5e runtime: support for targets without RTIO log channel 2016-11-23 10:50:55 +08:00
Sebastien Bourdeauducq cd40d5b107 runtime: support for targets without I2C 2016-11-23 10:50:55 +08:00
Sebastien Bourdeauducq fbd83cf9ee kc705: remove stale DDS definition 2016-11-22 22:48:22 +08:00
whitequark 965fdd35e5 runtime: show a prompt to erase startup/idle kernels. 2016-11-22 14:45:40 +00:00
whitequark 1d1e821a74 runtime: replace a (deliberate) memory leak with an interner. 2016-11-21 19:47:56 +00:00
whitequark ac997daf95 compiler: disable remarks. 2016-11-21 19:12:11 +00:00
whitequark 18b7ccea4e runtime: rewrite i2c support code in Rust. 2016-11-21 18:25:43 +00:00
whitequark a825584ac0 runtime: rewrite rtio support code in Rust. 2016-11-21 17:13:09 +00:00
Sebastien Bourdeauducq ef971ef8ba RELEASE_NOTES: update 2016-11-21 23:51:39 +08:00
Sebastien Bourdeauducq 93c310dfa5 pipistrello: add some inputs 2016-11-21 23:43:41 +08:00
whitequark 6aa5d9f6c6 Remove last vestiges of nist_qc1. 2016-11-21 15:36:22 +00:00
whitequark 5e8888d5f3 Fully drop AD9858 and kc705-nist_qc1 support (closes #576). 2016-11-21 15:14:17 +00:00
whitequark f4b7666768 coredevice.dds: reimplement fully in ARTIQ Python. 
This commit also drops AD9858 support from software.
 2016-11-21 15:13:26 +00:00
whitequark 55ea68da7f compiler: unbreak casts to int32/int64. 2016-11-21 14:20:28 +00:00
whitequark 53b7d59b6a analyses.constness: fix false positive on x[...]. 2016-11-21 14:20:26 +00:00
whitequark 35f4449ef2 inferencer: significantly improve the op-assignment diagnostic. 
Before this commit, it displayed incorrect output if an error
appeared on 2nd run and beyond, and displayed messages for trying
to do "num32 -= num64" that made very little sense.
 2016-11-21 14:20:24 +00:00
whitequark 3485c83429 Fix tests. 2016-11-21 06:40:47 +00:00
whitequark 009d396740 Move mu_to_seconds, seconds_to_mu to Core. 2016-11-21 05:37:30 +00:00
whitequark 06ea76336d artiq_devtool: don't crash on invalid utf-8. 2016-11-21 05:37:27 +00:00
whitequark b562b0fbc4 artiq_devtool: detect a race condition during connect. 2016-11-21 03:10:41 +00:00
whitequark 7af41bd29c llvm_ir_generator: handle no-op coercions. 2016-11-21 02:25:34 +00:00
Sebastien Bourdeauducq eb18466820 conda: use development version of migen/misoc 2016-11-20 22:56:48 +08:00
whitequark cdb29f9caa Revert accidentally committed code. 2016-11-20 14:32:59 +00:00
Sebastien Bourdeauducq ad1049d59a Revert "gateware: increase RTIO FIFO sizes for NIST_CLOCK. Closes #623" 
This reverts commit 4a62e09bd4.
 2016-11-20 21:35:07 +08:00
whitequark f5cca6b09e analyses.invariant_detection: implement (#622). 2016-11-20 12:48:26 +00:00
whitequark 30598720f4 Fix whitespace. 2016-11-20 09:50:00 +00:00
whitequark abf2b32b20 coredevice.dds: work around the round(numpy.float64()) snafu. 2016-11-20 09:49:58 +00:00
whitequark d7f4397924 coredevice.dds: update from obsolete int(width=) syntax (fixes #621). 2016-11-20 09:49:39 +00:00
David Leibrandt 4a62e09bd4 gateware: increase RTIO FIFO sizes for NIST_CLOCK. Closes #623 2016-11-20 15:22:32 +08:00
whitequark 2015fe9de0 doc: update installing_from_source for LLVM 3.9 transitionl 2016-11-18 10:35:36 +00:00
whitequark c7844d5223 runtime: use proper format for git commit. 
Fixes #620.
 2016-11-17 15:20:21 +00:00
whitequark 18c394976e runtime: disable the Nagle algorithm entirely. 
See also commit feed91d; that commit fixed the test_rpc_timing test,
but caused frequent hangs elsewhere, which were also caused by buggy
Nagle implementation. Just disable this entirely, as with our
explicit buffering it provides no benefit anyway.
 2016-11-13 00:33:24 +00:00
whitequark feed91d8b2 runtime: buffer RPC send packets. 
This brings mean RPC time from ~45ms to ~2ms.

The cause of the slowness without buffering is, primarily, that lwip
is severely pessimized by small writes, whether with Nagle on or off.
(In fact, disabling Nagle makes it function *better* on many small
writes, which begs the question of what's the point of having Nagle
there in the first place.) In practical terms, the slowness appears
only when writing a 4-byte buffer (the synchronization segment);
writing buffers of other sizes does not trigger the problem.

This all is extremely confusing and the fix is partly palliative,
but since it seems to work reliably and we're migrating off lwip
I think it is unwise to spend any more time debugging this.
 2016-11-12 23:06:33 +00:00
whitequark 3ce1826891 runtime: don't print debug messages to the UART. 
It takes ~4ms to print an empty log line because of how slow
the UART is. This makes the log timestamps useless for debugging
performance problems.

After this commit, it takes ~75us to print an empty log line instead,
which pessimizes test_rpc_timing by less than 2ms with tracing
enabled.
 2016-11-12 20:26:32 +00:00
whitequark acc5e53b32 runtime: print microsecond timestamps in debug messages. 2016-11-12 20:26:32 +00:00
whitequark dca3fb5c96 artiq_devtool: abort if build failed. 2016-11-12 20:26:32 +00:00
whitequark 7c2b1155ef conda: bump llvmlite-artiq dep. 2016-11-12 13:58:00 +00:00
whitequark 5eb940deb7 conda: bump llvmlite-artiq dep. 2016-11-12 04:09:34 +00:00
whitequark d3ee858d16 llvm_ir_generator: use !{→unconditionally.}invariant.load metadata. 
This helps LICM, among other things.
 2016-11-12 04:08:58 +00:00
whitequark 8b6418c604 artiq_devtool: more robust port forwarding. 2016-11-11 15:22:07 +00:00
Sebastien Bourdeauducq fbc2420443 setup: remove paramiko dependency (optional and developer-only) 2016-11-11 11:05:37 +08:00
whitequark 3b6cbb1f06 artiq_devtool: implement. 2016-11-10 20:25:15 +00:00
whitequark 0e76cbc414 artiq_compile: actually disable attribute writeback. 
I wrote both halves of this condition but forgot to hook
them together.

Fixes #586.
 2016-11-10 01:04:36 +00:00
whitequark 67e743d74a conda: use pythonparser 1.0. 2016-11-09 15:19:27 +00:00
whitequark 71f1d38860 conda: tighten pythonparser dependency (fixes #600). 2016-11-09 15:10:53 +00:00
whitequark eee8d05398 doc: clarify kernel_invariant doc (fixes #609). 2016-11-09 14:59:57 +00:00
David Nadlinger bfbdba9205 compiler: Emit all-kernel_invariant objects as LLVM constants 
This enables constant propagation optimisations, as verified by
the included test case. This is only a first stop-gap measure, though;
we should support optimisation based on kernel invariants on a more
fine-grained level.
 2016-11-09 14:50:48 +00:00