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u/imitation_squash_pro

r/googlecloud r/opera r/audiophile r/ADP r/SLURM r/Parenting r/squash r/vinyljerk r/Cuisinart r/FoodNYC r/americanairlines r/Retirement401k r/LIRR r/discogs r/Cruise r/snorkeling r/AlaskaAirlines r/musicians r/HealthyEatingnow r/subaruoutback r/StateFarm r/HomeImprovement r/beginnerrunning r/Skigear r/Westchester r/webscraping r/vinyl r/reddithelp r/ebaysucks r/RaybanMeta r/homerecordingstudio r/fortlauderdale r/scuba r/AcousticGuitar r/bikewrench r/nostalgia r/NoRules r/Rockland r/HPC r/c64 r/fea r/GuitarBeginners r/tenable r/Bogleheads r/HealthInsurance r/MetroNorthRailroad r/verizon r/Surface r/CFD r/StructuralEngineering r/IdentityTheft r/linux4noobs r/Flipping r/nessus r/FreeCAD r/OMNY r/personalfinance r/Excel247
I want to do proper FEA on a Commodore 64!
▲ 10 r/fea

I want to do proper FEA on a Commodore 64!

I want to get FEA working on the Commodore 64. It already has Giga-CAD which can export files in various formats. And there are also fortran and c-compilers for it. But can it handle meshing and solving a simple cantilever beam with say a hundred 2d quad elements?

Were there any command line C/Fortran codes that could mesh a 2D IGES/STEP file back in the 80s? I know gmsh can do this, but it was started late 90s. Wondering what people used in the 80s? This will be my first hurdle to solve.

I know there are BASIC program that you can type in to do 1D kind of analysis. But I want this running in machine language for 2D and generate the color contour plots..

u/imitation_squash_pro — 5 days ago
▲ 19 r/CFD

Why is the pressure in the middle column similar to the first column?

Trying to develop some intuitive understanding of CFD by replicating experimental results. Shouldn't the pressure in the second column be lower due to the increased velocity of the fluid underneath?

I am using cfdof to mesh and then openfoam to run. Using inlet velocity 0.001 m/s. The inlet diameter is 0.1 m and outlet diameter 0.025 m . Total length of the three sections is 0.75 m

Liquid is water.

u/imitation_squash_pro — 9 days ago
▲ 55 r/CFD

Stuck on step 1 ( 1-D Linear Convection ) of 12-steps to understanding Navier-Stokes

I don't understand intuitively where this equation comes from and what it means. I posted earlier about this and someone said to think of it like climbing stairs in an elevator. The first term is the elevator moving up and the second term is the vertical height from climbing stairs inside the elevator.

That kind of makes sense. But I don't see why the sum of those two terms needs to be zero? And is u the vertical height of the wave? If so, why not call it y instead of u ?

Last, what physical experiment can I observe that demonstrates this equation in action ( besides the elevator analogy )?

u/imitation_squash_pro — 16 days ago
▲ 13 r/HPC

Describing your work in year-end performance summaries.

Bulk of my work is maintaining the HPC, helping users, and working with vendors. Need to describe this in more "value to the business" language.. It's a challenge as HPC is more a behind the scenes, keep the lights on kind of work.

Tried using AI which came up with this below. But they seem too buzzword laden. Looking for other re-wordings?

•  Consistently maintained core infrastructure stability, resulting in [X]% uptime and zero critical outages over the past year."

•  "Proactively identified and mitigated potential system bottlenecks before they could impact end-users, keeping day-to-day operations seamless."

•  "Managed routine system maintenance and security updates, ensuring compliance and preventing high-priority vulnerabilities."

Optimized internal documentation and workflows, reducing onboarding time for new team members by [X]%."

"Maintained platform reliability and minimized system downtime."

Explain how you saved time or streamlined workflows for the team.

reddit.com
u/imitation_squash_pro — 17 days ago
▲ 2 r/Cuisinart

What is cuisinart thinking when they made the FPC 100 Complete Chef Cooking Food Processor?

Picked up this beast for free locally. It just seems so complicated, heavy, and unnecessary! Who wants to do chopping and cooking in the same device? I'd imagine a very small market for this. So why bother manufacturing it if there's no demand? Anwyays it seems discontinued now.

u/imitation_squash_pro — 23 days ago
▲ 1 r/nessus

Test scan on windows server keeps failing

It appears the service_tenable account I created doesn't have local administrator privileges. The scanner is not able to access the administrative hidden shares (C$ and ADMIN$) and there were some issues with the remote registry access and WMI access.

When I click on the properties of the service_tenable account in Windows server it shows it is a member of Administrators and Users. So I am not sure why the scans are failing? I have tried rebooting the server also a couple times.

reddit.com
u/imitation_squash_pro — 27 days ago
▲ 2 r/tenable

Test scan on windows server keeps failing

It appears the service_tenable account I created doesn't have local administrator privileges. The scanner is not able to access the administrative hidden shares (C$ and ADMIN$) and there were some issues with the remote registry access and WMI access.

When I click on the properties of the service_tenable account in Windows server it shows it is a member of Administrators and Users. So I am not sure why the scans are failing? I have tried rebooting the server also a couple times.

reddit.com
u/imitation_squash_pro — 27 days ago
▲ 11 r/HPC

User home directories are on a NFS share instead of our parallel file system? yay or nay?

Inherited a small cluster ( ~1000 cores , 10 servers ). For some reason the user home directories are all being served by NFS from one of the servers. We have a large beegfs parallel filesystem which runs on Infiniband. Not sure why the home directories are separate? Perhaps it offers some resiliency in case the beegfs is down?

We are seeing some performance issues. The NFS stalls if too many users are using it for various things. I am exploring some band aid solutions to change the NFS to automount on all the clients . But not sure that is going to do anything...

reddit.com
u/imitation_squash_pro — 1 month ago
▲ 9 r/HomeImprovement

Should I flush my water heater into that small drain where the red line points to?

See picture here: https://ibb.co/prXLkPv5

The drain seems rather small and I don't think it's ever been used in 15+ years. Or should I just get a long garden hose and drain it to outside my house ? Never done this before so not sure what to expect...

I am assuming a 3/8" Toilet Connector will fit it?

reddit.com
u/imitation_squash_pro — 1 month ago
▲ 9 r/audiophile

Best sounding version of Tchaikovsky 1812 overture on vinyl?

My local record store gives away many classical records every month since they get too many by donation. The 1812 overture comes up a lot so I've been able to sample the sound of at least a dozen or so different versions. This one sounds the best to my ears. Curious to know what others think of anything better sounding?

u/imitation_squash_pro — 1 month ago
▲ 5 r/beginnerrunning

Age 50, recently ran my fastest 3 miles on a treadmill in 21:32. Is there any point to improving this speed?

I know these numbers are nothing to write home about compared to what I see folks here running. But I feel like I've hit the point of diminishing returns. A year ago I would struggle with a 26 minute time and my legs would feel sore for several days. But now I feel no soreness the day after. And the 21:32 run feels mostly enjoyable ( a bit of discomfort in the last 0.5 as I bump the speed up to 9+ mph. ).

I feel it would take a lot more effort to get my times down. But why? Have I not reaped the best bang for the buck already? I don't see the point in doubling my training to shave off a minute or two?

reddit.com
u/imitation_squash_pro — 1 month ago
▲ 175 r/googlecloud

Free tier E2 Micro instance going strong after 4+ years

Running the obsolete Centos 8.5. Has a public webserver and has been working perfectly for 6+ years. If it ain't broke don't fix it. I wonder how long before Google forces me to update the OS?

I avoid rebooting it as then it will grab a new public IP and I have to update all my DNS records for it's domain name.

u/imitation_squash_pro — 1 month ago
▲ 1 r/googlecloud

No longer receiving the free e2-micro instance credit?

Noticed my monthly bill was $5-10 higher per month for past several months. Just chalked it up to inflation and maybe more usage of compute engine VMs. But based on the billing report it seems I am not getting the free credit for my E2 micro instance. I have had this same instance for 5+ years! I haven't even rebooted it in 4+ years. Billing glitch or some policy change I wasn't aware of?

u/imitation_squash_pro — 1 month ago
▲ 0 r/personalfinance

Are projected pension benefits in today's dollars?

My former employer has a projected pension benefits calculator. It says if I wait till 65 years old I can expect $xxxx a month. Are those numbers in today's dollars? Tried reading the fine print but they don't say... I am assuming normally these are reported in today's dollars..

reddit.com
u/imitation_squash_pro — 1 month ago
▲ 1 r/Surface

Can't get external monitor to work anymore

For past couple years have been having on/off issues getting a second monitor to work properly. Have tried different cables and monitors . So I ordered a docking station. Now it seems to work better but for some weird reason the monitor goes black after just a few seconds.

The graphics drivers are up to date. At this point it could be:

bad cable ( tried two )

bad monitor ( tried two )

bad docking station ( possible )

bad graphics hardware inside the surface pro

I am leaning towards the last one. But the odd thing is the monitors are detected ( but briefly ) when using the docking station. But not detected when using the mini display port on the surface pro ( although used to work intermittently for a few years )..

This is the docking station I got:

https://www.ebay.com/itm/168485862562

It says it's for Surface Pro 4, but my research said it should work fine on my Pro 6.

reddit.com
u/imitation_squash_pro — 2 months ago
▲ 4 r/squash

What is the correct way to grip head rackets?

Head rackets are weird because they have a huge flat side. They're not symmetrically round like most other grips. I grip it as shown in the beginning of the video. But I find my hand twists a lot when playing shots. Should the grip be more like what I showed towards the middle and end of the video?

u/imitation_squash_pro — 2 months ago