William Zimmerman

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since Apr 30, 2004
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Recent posts by William Zimmerman

Try looking at Ethereal
We are pretty free to spec out the system. Will probably go with dual 2.4 GHz Xeon 1U servers. There is concern about heat dissapation, or we would go faster. Possible use of dual-G5, but we have to wait and see.
What exactly do you mean by "permanently open socket based binary transfer of big data blocks"? Anything other than UDP?
[ May 05, 2004: Message edited by: William Zimmerman ]
19 years ago
>What is the rate of data point aquisition per node?
more than 300 channels of 24-bit data (~18 MB/sec aggregate rate) comming in a single ATM/SONET spigot.
>How big (memory wise) is a single data point?
Data ensembles will be at least 300K values
>How precise does the timing have to be?
Latency is not a big issue, but data skipping is frowned upon
>What fraction of dropped data points is acceptable?
1 in 10^9 would be nice. This system will only be running the aforementioned task, so we may be able to get away with UDP even though there are no guarantees with this protocol. I have thought of TCP, Corba and NDDS, but I am concerned that if I set up guaranteed delivery, they will not be able to keep up.
>How should raw data points be logged?
Raw snapshots of data may be accumulated in a raid, and then backed up to a SAIT tape drive
>Is the node network fixed or flexible?
It will be fixed, once we determine what we need.
19 years ago
I posted this on the intermediate Java forum, and they suggested I ask here as well:
I am designing a data acquisition, processing and display system that will use several processing nodes (linux pc) to distribute the load, and are considering using Java. The system will run stand-alone (not on the www), will have lots of scientific plots (x-y, color contour, waterfall) and performance is important. I have a rudimentary knowledge of Java as a programming language, and am aware of concepts such as EJB and JMS, but I am overwhelmed with the options available to me (and my team of 4 s/w engineers). My thoughts are to use Jbuilder and JClass as my development environment, but before I hurtle head-first into a design and development effort, I am wondering the following:
* What IDE, (IDEA, JBuilder, Eclipse) if any is appropriate for this type of system?
* Should I be concerned about MVC and other Patterns?
* What about Struts?
* What is the best way to integrate TCP/IP into Java?
* Are there any good references to using Java for stand-alone apps?
* What Java technologies should I be looking at?
I realize that I am asking a lot. I am looking for guidance as to what and where to look for information, not necessarily answers. Thanks.
19 years ago
I posted this on the intermediate Java forum, and they suggested I ask here as well:
I am designing a data acquisition, processing and display system that will use several processing nodes (linux pc) to distribute the load, and are considering using Java. The system will run stand-alone (not on the www), will have lots of scientific plots (x-y, color contour, waterfall) and performance is important. I have a rudimentary knowledge of Java as a programming language, and am aware of concepts such as EJB and JMS, but I am overwhelmed with the options available to me (and my team of 4 s/w engineers). My thoughts are to use Jbuilder and JClass as my development environment, but before I hurtle head-first into a design and development effort, I am wondering the following:
* What IDE, (IDEA, JBuilder, Eclipse) if any is appropriate for this type of system?
* Should I be concerned about MVC and other Patterns?
* What about Struts?
* What is the best way to integrate TCP/IP into Java?
* Are there any good references to using Java for stand-alone apps?
* What Java technologies should I be looking at?
I realize that I am asking a lot. I am looking for guidance as to what and where to look for information, not necessarily answers. Thanks.
19 years ago
I am designing a data acquisition, processing and display system that will use several processing nodes (linux pc) to distribute the load, and are considering using Java. The system will run stand-alone (not on the www), will have lots of scientific plots (x-y, color contour, waterfall) and performance is important. I have a rudimentary knowledge of Java as a programming language, and am aware of concepts such as EJB and JMS, but I am overwhelmed with the options available to me (and my team of 4 s/w engineers). My thoughts are to use Jbuilder and JClass as my development environment, but before I hurtle head-first into a design and development effort, I am wondering the following:
* What IDE, (IDEA, JBuilder, Eclipse) if any is appropriate for this type of system?
* Should I be concerned about MVC and other Patterns?
* What about Struts?
* What is the best way to integrate TCP/IP into Java?
* Are there any good references to using Java for stand-alone apps?
* What Java technologies should I be looking at?
I realize that I am asking a lot. I am looking for guidance as to what and where to look for information, not necessarily answers. Thanks.
Also, which forum(s) should this be posted to?
[ May 03, 2004: Message edited by: William Zimmerman ]
[ May 03, 2004: Message edited by: William Zimmerman ]
19 years ago
We are designing a data processing application that requires x-y plot, and color contour plots. Preferably, these would be high quality with adjustable scaling and cursors. Are there any packages that provide these capabilities?
19 years ago