Page History

June 6, 2017

Chuck:

• summer intern (utsab) working on sz absolute error compression
• working on photon conversion: with zwart and ruslan using det.photons()
• working on manifold embedding with hao-yuan for 2016 dataset (works for 2015 dataset)
• triggering options are time-of-flight and ROI/threshold on image (drifting background: need running average)
• hao-yuan looking at neural-nets for SPI hit-finding

clemens:

• working with cpo on data format inside DRP nodes
• can distribute at 3MHz on 4 core laptop

cpo

• looked at EPICS pvData with Murali
• ric and mark working on trigger and event distribution

silke

• focusing on lcls-1

May 23, 2017

mark

mikhail

chris

• went to hutches and played around with DAQ interface to enable event veto
• worked on quick-and-dirty background-subtraction/thresholding algorithm:  numba: 2ms, c++: 6ms (not understood why c++ slower). 

sioan

silke

chuck

clemens

May 16, 2017

mark

• getting open cluster working in lab2 drp node

mikhail

chris

• lab2 pgp loopback is running
• 0.5 Mpixel epix calibration is 30ms and peak-finding is about 60ms (although likely our algorithm can be sped up).  doesn't bode well for 4MP epixM at 10kHz in 2020.  looking into "quick and dirty" detector triggering algorithm:  simple background subtraction and thresholding 

sioan

• led's are counting on FPGA eval board

chuck

• working on SZ absolute error of +-30 doesn't seem to affect indexing

silke

May 9, 2017

clemens

• pgp in lab2

mark

• thinking about reusing astronomical package

mikhail

chris

• setting up test stand
• still understanding trigger vs. filter setting

silke

• distracted by turning things on

sioan

• moving from devel board to pgp card
• no progress on sxrk4816

chuck

• sfx: trying sz with 60 ADU
• spi: users like veto, binning, but not general lossy compression (e.g. sz)
• spi: data will be more sparse because of lower fluence (not true for sfx)

May 2, 2017

clemens:

• working on other stuff. need to pick out new project.
• handed off drp event distribution to mark

mark:

• working on drp event distribution

mikhail:

• working on other stuff (fiber diffraction)

sioan

• able to program image for xilinx eval board!
• still working on sxrk4816 SZ compression
• identified turner expt in oct for data reduction

silke

• will do determination of z distance of detector
• will see if beam centers work for tim analyses
• working on time tool calibration issues

chris

• understanding DAQ L3T code/control

Apr 25, 2017

sioan:

• has fpga hardware
• starting to use Herbst makefile
• sxrk4816 is on back burner (using absolute sz errors)
• continue to identify experiments where we can reduce

...

• working on DRP event distribution

Apr 4, 2017

sioan:

• vivado hls:  C-style programming done
• matlab is next

...

clemens:

• data in and out of pgp

Mar 28, 2017

sioan:

• still working on compiling hello-world
• still working on sxrk4816 with clemens

...

• explore the idea of keeping the data for a day

Mar 14, 2017

cpo:

• zhenglin results
• upcoming meetings with users

...

• beam centering: hough, ransac, scipy optimize 1-ring fitting
• canny uses soble filter
• looked at skbeam.  canny works better.
• hough transform took optimizing

Mar 7, 2017

chuck:

• playing around with SZ.  difficult because doesn't integrate into python.
• simulated SZ by adding 1% error
• sees common mode shift.  surprising, not understood
• indexing rate is 98% similar.  looks promising

...

• integrating silke's pyfai numbers from gpu onto his plots
• will work on legion
• next project:  work on the infrastructure for handing out events to different cores

Feb 28, 2017

mikhail:

• looked at skbeam centering algorithm
• sz compression

...

• working with legion people on gpu-based two-threshold lag

Feb 21, 2017

sioan:

• working on spatial.  good progress

...

• away at LBL xtallography workshop:  pessimistic about drp
  • unit-cell not known
  • bad pixels, which change over time (good enough, but room for improvement in our dark runs)
    • compare bad-pixel maps from super-users to dark-run results
  • geometry
• python scaling problem work
• students look at pywavelets:  zero-pads for performance reasons

Feb 14, 2017

Chuck:

• Tried SPI wavelet compression: 4x (on top of a 4x binned image)
• quantifying the error at goal: 3Angstrom resolution (currently 9nm)

...

sioan:

• running spatial builds

Feb 7, 2017

sioan:
possible users to contact:

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• comparing python/C++: still working on it
• zmq/mpi/gasnet
• gasnet: 3 year old python bindings
• setup mtg with elliott/wonchan?
• talk with DAQ about DRP re-configuration

Jan 27, 2017

mikhail:

• henrik algorithm
• filipe maia algorithm
• running on gpus/knl
• evaluate compression package from argonne that amedeo will send out

...