mirror of https://github.com/BOINC/boinc.git
180 lines
5.0 KiB
Plaintext
180 lines
5.0 KiB
Plaintext
HIGH-PRIORITY (must be done to support SETI@home)
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- Network retry policies
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can't download file: when to give up? how to retry?
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exponential backoff
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can't upload file: when to give up/retry?
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can't connect to sched server
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error return from sched server
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- make scheduling server use fast CGI
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- proxy support
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HTTP, Socks
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Look at other open source code
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- team system
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in PHP
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- credit display
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in PHP
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- CPU accounting in the presence of checkpoint/restart
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core client periodically gets CPU time, accumulates in state file
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- test versioning mechanisms for core
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Idea: need to notify user if core becomes out of date.
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Send messages if either
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1) some WU couldn't be sent because core is too old
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2) no WUs could be sent because core is too old
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- Think about issues in update core client
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What if state file is incompatible?
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What if app versions are incompatible?
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- test reporting of app errors
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- test checksumming of executables
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- Think about making the set of scheduling servers dynamic
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one approach: allow "redirect" reply from server
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(requires old address to still work)
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second approach: "master URL"
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returns a file with list of scheduler address
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and email address of "problems" contact
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- implement and test hi/lo water mark scheme
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- core client must estimate how much work it has left,
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based on %done (if available) and time estimates
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- measure hardware parameters: CPU speed, #CPUs, memory, disk
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- define CPU benchmarks
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- do this for other platforms
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- Get info periodically rather than always at startup
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- core client / app trigger file interface
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core->app
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init:
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app preferences
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name of graphics shared-mem seg
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recommended graphics size
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recommended frame rate
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recommended checkpoint period
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dynamic:
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whether to do graphics
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exit
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app->core
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init:
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actual graphics size
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dynamic:
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% done
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I just checkpointed
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- implement graphics system
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Basic idea: core client passes shared-memory segment name to app,
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recommended size and frame rate.
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App creates pixmap + dirty flag in shared mem,
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renders to it, sets dirty flag.
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Core client (or screensaver) maps shared mem.
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When dirty, blit pixmap to screen
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- X11 version
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It's not clear whether X11 allows you to draw into memory.
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Does everything have to go through server?
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- Win32-based version
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- The API by which the app draws into shared-mem pixmap should
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be platform-independent.
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In the first pass we can use our own library based on Win32 primitives.
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In principle we should be able to use any library
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capable of offscreen drawing.
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OpenGL version?
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- GUI and screensaver around core client
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design default (core client) display
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screensaver options
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move around screen?
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system tray icon behavior
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- get idle-only behavior without screensaver
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Windows
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UNIX
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- sched server should return total credit info (user, team?)
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could display in default core client display
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- edit user account
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--------------------------
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MEDIUM-PRIORITY (must be done for CM)
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- review and complete documentation
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- test sticky files
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- test multiple-file applications
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change add.C to support multi-file applications
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- implement WU/result sequences
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--------------------------
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LOW-PRIORITY
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- implement checkpoint/restart for file transfers
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use features of HTTP 1.1
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Return an error to server if transfer fails
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(store in DB in server)
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- implement and test the batch mechanism
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- test environment-var mechanism
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- test alpha/beta/prod for apps
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- test on a multiprocessor
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- define logging system on client
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- server-side estimates of WU time requirements
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- DB entry for WU has int/FP/RAM/disk/net
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- server sends only feasible WUs
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- limit by RAM, disk
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- test
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- implement file upload/download requests
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- preferences
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finish PHP web interface
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specific preferences:
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disk usage
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% of free space?
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all except X GB?
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X GB?
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minimum checkpoint interval
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max bytes upload/download per day
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implement in client
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hours/days to communicate/compute
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implement in client
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control over priorities?
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- define a notion of "app preferences": arbitrary XML edited on server,
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passed to app client.
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This could be used to e.g. select a color scheme for graphics
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Could pass entire prefs?
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- NET_XFER_SET:: do_select: prevent one stream from starving others
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- add the ability to store input data directly in WU,
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and output directly in result (blob).
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For projects with small data.
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--------------------------
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DONE (may need test)
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- mechanism for returning app stderr output to server? store in blob?
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- add size to FILE_INFO
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server, client sides
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- measure bandwidth on each network xfer
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maintain exponential average, weighted by #bytes xferred
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