Dear List,<br><br>I use matlab code to process images stored in Omero and I noticed that a major bottleneck of the process is the time required to retrieve images from omero to memory using omero matlab client and I am wondering if other people experienced the same issue and more importantly if they are aware of possibilities of improvements.<br>
<br>To be more detailed, I use matlab 2011a on a debian 6 computer (dual iXon quad core 2.6 Ghz, 24 GB RAM, details below), data are located on a drobo pro conected to the computer via iSCSI Gigabit interface. Within matlab, using getPlaneFromImageId in the omero matlab toolbox, I read a 4086 frame tif file (512x512, 16 bits) in roughtly 200 s. Using omero insight, I downloaded the original tiff file into the drobo volume and opened it (not as virtual stack of course) with Fiji and it took about 50 seconds. Copying the data between two folders on the drobo takes 25 s. <br>
<br>I currently run image processing on data stored in Omero and when profiling the algorithm, 35 % of the time is spent on getPlaneFromImageId. Thus, a few fold of speed increase would be a strong advantage considering that the processing take in toto a few days. Most of the reading are sequential (or every n-th images).<br>
<br>I would be very grateful if anyone would share suggestions on the way of optimizing this.<br><br>Many thanks in advance<br><br>Best regards<br><br>Jacques Pécréaux<br><br>------------------<br>System information report, generated by Sysinfo: 6/24/2011 12:29:48 PM<br>
<a href="http://sourceforge.net/projects/gsysinfo">http://sourceforge.net/projects/gsysinfo</a><br><br>SYSTEM INFORMATION<br> Running Debian Linux, the 6.0.1 release.<br> GNOME: 2.30.2 (Debian 2010-11-12)<br> Kernel version: 2.6.32-5-amd64 (#1 SMP Mon Mar 7 21:35:22 UTC 2011)<br>
GCC: 4.3.5 (x86_64-linux-gnu)<br> Xorg: unknown (18 February 2011 08:27:24PM) (18 February 2011 08:27:24PM)<br> Hostname: <a href="http://cedre-5a.med.univ-rennes1.fr">cedre-5a.med.univ-rennes1.fr</a><br> Uptime: 35 days 3 h 4 min<br>
<br>CPU INFORMATION<br> GenuineIntel, Intel(R) Xeon(R) CPU E5620 @ 2.40GHz<br> Number of CPUs: 16<br> CPU clock currently at 1596.000 MHz with 12288 KB cache<br> Numbering: family(6) model(44) stepping(2)<br>
Bogomips: 4787.70<br> Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt aes lahf_lm ida arat tpr_shadow vnmi flexpriority ept vpid<br>
<br>MEMORY INFORMATION<br> Total memory: 24148 MB<br> Total swap: 166892 MB<br><br>STORAGE INFORMATION<br><br>HARDWARE INFORMATION<br>MOTHERBOARD<br> Host bridge<br> Intel Corporation Xeon 5600 Series Integrated Memory Controller Channel 2 Thermal Control (rev 02)<br>
Subsystem: Hewlett-Packard Company Device 130b<br> PCI bridge(s)<br> Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 1 (rev 13) (prog-if 00 [Normal decode])<br> Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 3 (rev 13) (prog-if 00 [Normal decode])<br>
Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 7 (rev 13) (prog-if 00 [Normal decode])<br> Intel Corporation 82801JI (ICH10 Family) PCI Express Root Port 1 (prog-if 00 [Normal decode])<br> Intel Corporation 82801JI (ICH10 Family) PCI Express Root Port 5 (prog-if 00 [Normal decode])<br>
Intel Corporation 82801JI (ICH10 Family) PCI Express Root Port 6 (prog-if 00 [Normal decode])<br> Intel Corporation 82801 PCI Bridge (rev 90) (prog-if 01 [Subtractive decode])<br> Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 3 (rev 13) (prog-if 00 [Normal decode])<br>
Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 7 (rev 13) (prog-if 00 [Normal decode])<br> Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 9 (rev 13) (prog-if 00 [Normal decode])<br>
Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 1 (rev 13) (prog-if 00 [Normal decode])<br> Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 3 (rev 13) (prog-if 00 [Normal decode])<br>
Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 7 (rev 13) (prog-if 00 [Normal decode])<br> Intel Corporation 82801JI (ICH10 Family) PCI Express Root Port 1 (prog-if 00 [Normal decode])<br> Intel Corporation 82801JI (ICH10 Family) PCI Express Root Port 5 (prog-if 00 [Normal decode])<br>
Intel Corporation 82801JI (ICH10 Family) PCI Express Root Port 6 (prog-if 00 [Normal decode])<br> Intel Corporation 82801 PCI Bridge (rev 90) (prog-if 01 [Subtractive decode])<br> Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 3 (rev 13) (prog-if 00 [Normal decode])<br>
Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 7 (rev 13) (prog-if 00 [Normal decode])<br> Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 9 (rev 13) (prog-if 00 [Normal decode])<br>
USB controller(s)<br> Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #4 (prog-if 00 [UHCI])<br> Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #5 (prog-if 00 [UHCI])<br> Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #6 (prog-if 00 [UHCI])<br>
Intel Corporation 82801JI (ICH10 Family) USB2 EHCI Controller #2 (prog-if 20 [EHCI])<br> Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #1 (prog-if 00 [UHCI])<br> Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #2 (prog-if 00 [UHCI])<br>
Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #3 (prog-if 00 [UHCI])<br> Intel Corporation 82801JI (ICH10 Family) USB2 EHCI Controller #1 (prog-if 20 [EHCI])<br> Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #4 (prog-if 00 [UHCI])<br>
Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #5 (prog-if 00 [UHCI])<br> Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #6 (prog-if 00 [UHCI])<br> Intel Corporation 82801JI (ICH10 Family) USB2 EHCI Controller #2 (prog-if 20 [EHCI])<br>
Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #1 (prog-if 00 [UHCI])<br> Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #2 (prog-if 00 [UHCI])<br> Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #3 (prog-if 00 [UHCI])<br>
Intel Corporation 82801JI (ICH10 Family) USB2 EHCI Controller #1 (prog-if 20 [EHCI])<br> ISA bridge<br> Intel Corporation 82801JIR (ICH10R) LPC Interface Controller<br> Subsystem: Hewlett-Packard Company Device 130b<br>
<br>GRAPHIC CARD<br> VGA controller<br> nVidia Corporation G96 [Quadro FX 580] (rev a1) (prog-if 00 [VGA controller])<br> Subsystem: nVidia Corporation Device 063a<br><br>SOUND CARD<br> Multimedia controller<br>
Intel Corporation 82801JI (ICH10 Family) HD Audio Controller<br> Subsystem: Hewlett-Packard Company Device 130b<br><br>NETWORK<br> Ethernet controller<br> Broadcom Corporation NetXtreme BCM5764M Gigabit Ethernet PCIe (rev 10)<br>
Subsystem: Hewlett-Packard Company Device 130b<br><br>NVIDIA GRAPHIC CARD INFORMATION<br> Model name: Quadro FX 580<br> Card Type: PCI-E <br> Video RAM: unknown<br> GPU Frequency: unknown<br> Driver version: NVIDIA UNIX x86_64 Kernel Module 260.19.44 Sun Feb 27 22:41:03 PST 2011<br>