Sciforma has added some buffer management functionality in its latest release. The system will dynamically calculate the buffer status based on the number of...
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Christian Walenta
walenta@...
Sep 12, 2003 2:01 pm
I will be out of the office starting September 7, 2003 and will not return until September 15, 2003. I will respond to your mail upon return on 8/25. In urgent...
Dann I suggest that you do periodic Monte Carlo simulations with Arena or Simul8. You can get a better estimate of your buffer requirements in real time or...
I have used Monte Carlo simulation to determine the probablility of a project completing on a particular date, but I don't know how it plays into determining...
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Matías Birrell
mbr@...
Sep 12, 2003 4:27 pm
Hi Dann, If you schedule the tasks with the median and use a distribution for each, you will have a range of scenarios of probable completions. So, summing up...
Try adding a project buffer of some length and run a simulation to determine the probability of finishing by the end of the buffer. Then change the length of...
I think I am a little confused as to why the project buffer size is being
recalculated. Shouldn't the project buffer simply remain at 20 days? On
the other...
Thanks to all for the information on using Monte Carlo simulation to estimate buffer length. It's something I hope I can incorporate into my planning process...
And finally I see the light! Jack, you explained very clearly what I am trying to achieve and (I think) what the Sciforma software does, if you allow it to...
I believe this to be an extremely useful feature. In fact, I use a user-defined formula of Protection Ratio = Buffer Remaining / Buffer Duration Guide. A...
Can you expand on this a bit more? How does it give the right signals more often? And do you use it for both feeder buffers and for the project buffer? In the...
I used to consider two different cases which lead to different qualification : (1) case of highly riskful project, when even after applying skilfully a risk...
Dann: It gives us the right signals more often, as it takes into account more information about the state of the chains feeding each buffer, than most other...
Are you going to PMI's big show in Baltimore? I'll be there between September 21 and 24th, and would be willing to serve as coordinator for a gathering of...
And I think I am seeing the light too. I take it that "dynamic buffer calculations" from the SciForma point of view is a way of helping the team understand...
The buffer size does not change in Sciforma, unless you go back to the planning mode, and re-plan the remaining work in the project. The Buffer Duration Guide...
Jack, thanks for sharing how Concerto calculates buffer color. You obviously have made a serious commitment to Critical Chain PM. What type of projects are you...
Hello Group: A part of the project's network depends on the deliverables of some predecessors, only at that point a choice can be made, for example: either we...
Hi! 1. Layout the network both ways to understand the time impact of either direction. 2. If engineering is the constraint, determine the impact of purchasing...
Hi Gene, I have been doing point 1, developed both networks, about point 2, engineering is the drum, but it has enough capacity, most of the decissions of...
Hi! I'm a bit surprised that you say "engineering is the drum, but it has enough capacity". But, let's just accept that for now. Why don't you plan the project...
Classic problem. As with Gene's suggestion, it is probably best to start by assuming the worst case -- that your drum resource will be used to design/build...
Guideline for dealing with decision points : See "The Art of High-Stakes Decision-Making" by Murnighan and Mowen (2002). Therein, they advice a general...
Thanks to all, I state that engineering has enough capacity because they have been wasting a lot of time and still introducing new products far more faster...
Dan, All; We have used Concerto in the bioprocess group in Phase III development of
the processes. This combines resources from development (developing...
Hi Piet: I think the root cause of the problem is lack of commitment at the time of network building, lack of skills on doing it, that also shows up as poor ...
Juan, This is a good observation. The successful implementation of CCPM almost always requires a commitment from management to give teams time to plan...
Hi, I frankly amazed that you have been able to apply ccpm to pharma type projects. I've been working with Merck recently and have found a lot of resistance to...
