linaro-validation

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818 discussions

by Paul Sokolovsky

Hello, Yong Qin is working on the blueprint https://blueprints.launchpad.net/lava-android-test/+spec/modify-android-bui… to add arbitrary custom client-side scripts to Android Build. He submitted first implementation of it as https://code.launchpad.net/~liuyq0307/linaro-android-build-tools/run-custom… and documented as https://wiki.linaro.org/Platform/Android/AndroidBuild-LavaIntegration . Unfortunately, I'm not thrilled with that implementation, more specifically, its "user interface" (i.e. any parts which user directly faces) by the following reasons: 1. The idea behind Android Build's build config was that they're short and easy for human to parse, essentially one glance-over would enough to get a good idea what is built here, even for outsider. Consequently, the configs should not be overloaded with details not related to building. If there's a need for integration with other systems, we have good pattern of externalizing such details and then just referring to them with a single variable in a build config. 2. The whole approach in https://wiki.linaro.org/Platform/Android/AndroidBuild-LavaIntegration seems like trying to encode hierarchical structure in the shell syntax, which is not much supporting of that. The end result looks pretty much like representation of graph structure in raw assembler - it's spaghetti mix of data pieces and labels, requiring long time to wrap hand around to understand it, and cumbersome and error-prone to write. So, I would like to propose alternative syntax solving the issues above. I probably should start with saying that if the talk is about LAVA, then using native LAVA JSON request immediately comes to mind. Well, I guess human-writability wasn't a design goal for that, so I skip it. It still makes sense to stick to general-purpose hierarchical structure syntax though. Except that JSON has 2 problems: a) it doesn't support comments natively, so we'll need to pre-process it; b) error reporting/localization may be still no ideal. Anyway, here's my try, it is presented as a comment to https://wiki.linaro.org/Platform/Android/AndroidBuild-LavaIntegration and then full example at https://wiki.linaro.org/Platform/Android/AndroidBuild-LavaIntegration/pfalc… Let's discuss if that covers our needs and constraints. Thanks, Paul Linaro.org | Open source software for ARM SoCs Follow Linaro: http://www.facebook.com/pages/Linaro http://twitter.com/#!/linaroorg - http://www.linaro.org/linaro-blog

14 years

Pluggable LAVA bundle specification

by Zygmunt Krynicki

Hi. Another specification for the backlog and your feedback. Please read this as I'd like to move towards planning dependency blueprints (even if they also end up in a backlog). https://blueprints.launchpad.net/linaro-python-dashboard-bundle/+spec/plugg… Many thanks ZK -- Zygmunt Krynicki Linaro Validation Team

14 years

2012.04 cycle planning: lava-device-manager

by Zygmunt Krynicki

Hi. I've registered a new blueprint about a new proposed component. Please read the blueprint and comment here on the mailing list. My goal is to put planning for that in this cycle and perhaps one small blueprint that would implement some of the code behind that. You can find the blueprint on the new project page: https://blueprints.launchpad.net/lava-device-manager/+spec/lava-device-mana… Thanks ZK -- Zygmunt Krynicki Linaro Validation Team

14 years

Toolchain builds in LAVA

by Michael Hope

Hi there. The GCC build time is approaching 24 hours and our five Panda boards can't keep up. Sounds like a good time to LAVAise the toolchain build process a bit more... Mike Hudson and I talked about doing a hybrid LAVA/cbuild as a first step where LAVA manages the boards and cbuild does the build. The idea is: * There's a image with the standard toolchain kernel, rootfs, build environment, and build scripts * The LAVA scheduler manages access to the boards * The LAVA dispatcher spins up the board and then invokes the cbuild scripts to build and test GCC This gives me a fixed environment and re-uses the existing build scripts. In the future these can be replaced with different LAVA components. There's a few details: * cbuild self updates on start so the image can stay fixed * Full results are pushed by cbuild to 'control' * The dispatcher records the top level log and an overall pass/fail * No other bundles are generated Most of this fits in with the existing LAVA features. There's a few additions like a 'run command' JSON action, passing the board name to the instance, and passing the job name as an argument. These seem OK. I'd like some of the boards to be fitted with fast USB flash drives for temporary storage. SD cards are slow and unreliable especially when GCC is involved. Thoughts? -- Michael

14 years

GCC build speed and backlog

by Michael Hope

The PandaBoard auto builders are having a hard time keeping with longer build and test times of 4.7 and the re-enabled libstdc++ tests. For reference, here's how much each step costs: Bootstrap GCC with C, C++, Fortran, and Obj-C: 9 hours Test GCC: 9.5 hours Test libstdc++: 4.4 hours Test libgomp: 0.9 hours Other tests: 0.2 hours for a grand total of 23.8 hours. Every new commit gives a merge request and trunk build for both A9 and ARMv5 giving 95 hours of compute time. GCC 4.6 takes five hours to build and 5.5 to test. This is just a FYI. I'll think about ways of speeding things up or adding capacity. An i.MX6 with 2 GB of RAM and SATA would be nice... -- Michael

14 years

liuyq will be on leave from 29th~4th

by YongQin Liu

Hi, all I will be on leave from 29th~4th, and will be back to work from 5th April. Thanks, Yongqin Liu

14 years

Merge lava-dashboard-tool into lava-dashboard

by Zygmunt Krynicki

Hi. This time a small blueprint that can be easily done in one or two days. I think that, if successful, we could apply this pattern to other tools to cut down the number of parts we need to release. (offtopic) If successful I'd like to schedule the following merges: lava-dashboard-tool + lava-dashboard -> lava-dashboard lava-scheduler-tool + lava-scheduler -> lava-scheduler lava-server + lava-tool -> lava-core The last part would define the core dependency of any lava component. This may be a good idea or a bad idea, depending on how you think about it. Feel free to think about it and comment but please keep the separation of concerns so that this (dashboard focused) blueprint can be considered without runaway discussion. (ontopic) The blueprint is on the lava-dashboard-tool project. Please comment here on the mailing list. https://blueprints.launchpad.net/lava-dashboard-tool/+spec/lava-dashboard-t… Thanks ZK -- Zygmunt Krynicki Linaro Validation Team

14 years

2012.04 planning, Support for identifying SD cards from master image

by Zygmunt Krynicki

Hi Another 2014.04 planning blueprint. A trivial two-hour blueprint with great potential for future usage. A copy of the description: Currently all boards we are interested in have a working mmc controller. SD specification defines the CID register that contains per-card unique identification numbers. The actual syntax of the register is irrelevant but if made available from the master image could be used to track and identify SD cards in a particular lava installation. A master image could detect when a post-first-boot image was copied to another card (thus breaking uniqueness of first-boot-uuid). LAVA device manager could track the wear of each card even if it was moved from board to board without explicit notification done manually by the system administrator. The device manager could also track SD card performance as experienced by different devices in different master images. This could be used as basis for additional argument to timeout expressions it dispatcher jobs. See more (work items) at: https://blueprints.launchpad.net/lava-master-image-scripts/+spec/master-ima… Thanks ZK -- Zygmunt Krynicki Linaro Validation Team

14 years

Django 1.4 and South 0.7.4 released

by Zygmunt Krynicki

Hi. Those two [1], [2] components are essential to LAVA. If you encounter any unusual bugs on upgrade or fresh deployment please check if downgrading to django 1.3 fixes anything for you. In any case please report all issues or suspected issues on our bug tracker [3]. Thanks ZK [1]: https://www.djangoproject.com/weblog/2012/mar/23/14/ [2]: http://south.aeracode.org/docs/releasenotes/0.7.4.html [3]: https://bugs.launchpad.net/lava-server/+filebug -- Zygmunt Krynicki Linaro Validation Team

14 years

Re: [Linaro-validation] Syntax for custom LAVA tests

by Zygmunt Krynicki

W dniu 27.03.2012 15:04, James Tunnicliffe pisze: > On 27 March 2012 12:48, Zygmunt Krynicki <zygmunt.krynicki(a)linaro.org> wrote: >> W dniu 27.03.2012 13:32, Paul Sokolovsky pisze: >>> Hello, >>> >>> Yong Qin is working on the blueprint >>> https://blueprints.launchpad.net/lava-android-test/+spec/modify-android-bui… >>> to add arbitrary custom client-side scripts to Android Build. He >>> submitted first implementation of it as >>> https://code.launchpad.net/~liuyq0307/linaro-android-build-tools/run-custom… >>> and documented as >>> https://wiki.linaro.org/Platform/Android/AndroidBuild-LavaIntegration . >>> >>> Unfortunately, I'm not thrilled with that implementation, more >>> specifically, its "user interface" (i.e. any parts which user directly >>> faces) by the following reasons: >>> >>> 1. The idea behind Android Build's build config was that they're short >>> and easy for human to parse, essentially one glance-over would enough >>> to get a good idea what is built here, even for outsider. Consequently, >>> the configs should not be overloaded with details not related to >>> building. If there's a need for integration with other systems, we have >>> good pattern of externalizing such details and then just referring to >>> them with a single variable in a build config. >>> >>> 2. The whole approach in >>> https://wiki.linaro.org/Platform/Android/AndroidBuild-LavaIntegration >>> seems like trying to encode hierarchical structure in the shell syntax, >>> which is not much supporting of that. The end result looks pretty much >>> like representation of graph structure in raw assembler - it's >>> spaghetti mix of data pieces and labels, requiring long time to wrap >>> hand around to understand it, and cumbersome and error-prone to write. >>> >>> >>> So, I would like to propose alternative syntax solving the issues >>> above. I probably should start with saying that if the talk is about >>> LAVA, then using native LAVA JSON request immediately comes to mind. >>> Well, I guess human-writability wasn't a design goal for that, so I >>> skip it. It still makes sense to stick to general-purpose hierarchical >>> structure syntax though. Except that JSON has 2 problems: a) it doesn't >>> support comments natively, so we'll need to pre-process it; b) error >>> reporting/localization may be still no ideal. >> >> Hi, just jumping into the conversation briefly to look at small >> technical aspect. I have not really been tracking this command effort >> and I don't understand what it's about. >> >> On JSON: I think that comment 2 is inaccurate. We have very precise >> syntax error reporting (down to line/column and text range on some >> errors) and even better format reporting (the javascript expression that >> pinpoints the part of json document that does not match the schema, same >> for the schema actually). >> >> Anyway, you have my full support for native json formats. I think that >> if comments are an issue I can provide a parser that simply ignores >> comments. We could then keep the human readable documents and strictly >> machine readable, schema-backed data. > > There is always YAML - very much human readable, supports hierarchical > structures, references and comments. CC-ing the list again. My long established stance is that YAML is too baroque to be used as a data interchange format intended for humans to _write_. Compare YAML spec: http://www.yaml.org/spec/1.2/spec.html With JSON spec: http://www.json.org/ Make sure to scroll down on the YAML spec, that's _is_ what people need to remember to understand what they write. The JSON spec is entirely defined in that railroad graph that fills my screen. IMHO YAML is filled so many feature that it is virtually impossible to remember the full syntax. Last time I've checked there was still no single python parser that supported everything the spec has to offer. While JSON is strict to the point that it's sometimes annoying it does not let you make a mistake by accident, there's like 5 syntax elements to remember. YAML is full of, comparatively, exotic features that while otherwise harmless can easily confuse users (seemingly random syntax has meaning) and tools (oh, my parser does not support that feature). The second argument against YAML is that JSON remains usable on the web and you don't need two interfaces. Keeping everything in one format is a good idea IMHO. This may be of no relevance here but if you look at the entire LAVA ecosystem so far there's no YAML there, just JSON. Lastly, we have also built nice validation for JSON so that not only syntax but also the full structure can be checked automatically and reliably and I'm not aware of any for YAML at this time. The fact that YAML has support for loops and pointers makes the tools we have useless. For the sake of human-readability _and_ writeability, a small subset of YAML might be better than JSON but the full spec IMHO suffers just a much as JSON, yet for opposite reasons. My vote is -1. Thanks ZK -- Zygmunt Krynicki Linaro Validation Team

14 years

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