Some projects (namely CPDN) need to process trickle-up messages
with two different daemons.
We do this as follows:
- daemon 1 enumerates messages with handled==0, and sets handled=1
- daemon 2 enumerates messages with handled==1, and sets handled=2
You can then purge records with handled==2
To implement this, trickle_handler.cpp has two global vars,
int handled_enum and int handled_set.
By default these are 0 and 1.
For daemon 2, set them to 1 and 2 in trickle_handler_init()
but checks for the "stop_daemons" trigger file every 1 sec.
Use this instead of sleep() in daemons.
This will speed up bin/stop.
svn path=/trunk/boinc/; revision=25708
This assigns credit proportional to runtime*p_fpops.
To prevent cheating, p_fpops is capped at the 95th percentile value
among active hosts,
and runtime is capped at a specified limit.
This option supports apps, like LHC's CERNvm app,
that run for a certain amount of time and then exit.
The CreditNew system doesn't work for such apps.
- trickle_credit:
To prevent cheating,
cap p_fpops at the 95th percentile value among active hosts,
and require a limit on runtime.
- require that trickle handlers supply an initialization function
svn path=/trunk/boinc/; revision=24182
trickle_credit: grants credit based on CPU time reported in msg
trickle_echo: echoes trickle-up as a trickle-down
svn path=/trunk/boinc/; revision=23118
- daily quota mechanism
- reliable mechanism (accelerated retries)
- "trusted" mechanism (adaptive replication)
- scheduler: enforce host scale probation only for apps with
host_scale_check set.
- validator: do scale probation on invalid results
(need this in addition to error and timeout cases)
- feeder: update app version scales every 10 min, not 10 sec
- back-end apps: support --foo as well as -foo for options
Notes:
- If you have, say, cuda, cuda23 and cuda_fermi plan classes,
a host will have separate quotas for each one.
That means it could error out on 100 jobs for cuda_fermi,
and when its quota goes to zero,
error out on 100 jobs for cuda23, etc.
This is intentional; there may be cases where one version
works but not the others.
- host.error_rate and host.max_results_day are deprecated
TODO:
- the values in the app table for limits on jobs in progress etc.
should override rather than config.xml.
Implementation notes:
scheduler:
process_request():
read all host_app_versions for host at start;
Compute "reliable" and "trusted" for each one.
write modified records at end
get_app_version():
add "reliable_only" arg; if set, use only reliable versions
skip over-quota versions
Multi-pass scheduling: if have at least one reliable version,
do a pass for jobs that need reliable,
and use only reliable versions.
Then clear best_app_versions cache.
Score-based scheduling: for need-reliable jobs,
it will pick the fastest version,
then give a score bonus if that version happens to be reliable.
When get back a successful result from client:
increase daily quota
When get back an error result from client:
impose scale probation
decrease daily quota if not aborted
Validator:
when handling a WU, create a vector of HOST_APP_VERSION
parallel to vector of RESULT.
Pass it to assign_credit_set().
Make copies of originals so we can update only modified ones
update HOST_APP_VERSION error rates
Transitioner:
decrease quota on timeout
svn path=/trunk/boinc/; revision=21181
- client (Unix): if client crashes while benchmark processes are going,
make sure they detect this and exit.
- back-end programs: remove hardwired assumptions about
what directory they run in, and hence where config.xml is.
E.g., daemons look for it in "..", others expect it in current dir.
New approach: all the programs look for the project dir as follows:
1) the environment var BOINC_PROJECT_DIR, if defined
2) the current dir, if config.xml is there.
3) else ".."
This means you can run programs in either proj/bin/ or proj/,
or (using BOINC_PROJECT_DIR) you can keep executables
outside of the project dir.
svn path=/trunk/boinc/; revision=18042
because we don't have any (matchmaker only).
- back end programs: for programs that do enumerations,
check for error returns and exit
(otherwise we'll get stuck forever if DB fails)
NOTE: In the course of researching this I came across a bug
in the transitioner: if there's a WU with more than 1000 results,
the enumeration will always return ERR_DB_NOT_FOUND,
and the transitioner won't ever do anything again.
Fixing this is a little tricky, so I'm not going to do it right now.
svn path=/trunk/boinc/; revision=16324
David Anderson