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Space

TheSpaceGame — Design Your Route To Jupiter 76

An anonymous reader writes "The Advanced Concepts Team of the European Space Agency is celebrating World Space Week (4-10 October 2010) with the release of 'The Space Game,' an online game for interplanetary trajectory design. The Space Game is an online crowdsourcing experiment where you are given the role of a mission designer to seek the best path to travel through space. The interactive game, coded in HTML5, challenges the players to devise fuel-efficient trajectories to various bodies of the Solar System via a user-friendly interface. The aim of the experiment is get people from all ages and backgrounds to come up with better strategies that can help improve the effectiveness of the current computer algorithms. As part of the events organized worldwide for Space Week, the first problem of the game is to reach Jupiter with the lowest amount of propellant. The best scores by 10 October will be displayed on the Advanced Concepts Team website and the three best designs will also receive some ESA prizes."

Comment Re:Last we did a competitive evaluation... (Score 1) 215

Why are you replacing the motherboards yourself? With my T61p, when something in it died - motherboard needed replacing - I called up IBM and told em it's broke. Something like 19 hours later, DHL has a box for me at my door to ship the laptop out in. I put the laptop in the box and call up DHL to schedule picking up the shipping box. The same DHL guy is back 15 minutes later and takes the box. 23 hours later, same DHL delivery guy is back on my doorstep with my repaired laptop. This was with the standard warranty option when buying the laptop. My mind was blown on just how quickly it got fixed. Apparently got shipped from MI to Memphis, repaired, and shipped back in less than 24 hours.

Does this level of support not exist anymore? Otherwise, why are you replacing the motherboards in house - especially if you don't have spare parts readily available. Also, your complaint about the 44 screws? I mean, come'on, tieing the laces on my shoes takes 10 times longer than using velcro, but it's really kinda not a very big deal.

Bug

Saboteur Launch Plagued By Problems With ATI Cards 230

An anonymous reader writes "So far, there are over 35 pages of people posting about why EA released Pandemic Studios' final game, Saboteur, to first the EU on December 4th and then, after knowing full well it did not work properly, to the Americas on December 8th. They have been promising to work on a patch that is apparently now in the QA stage of testing. It is not a small bug; rather, if you have an ATI video card and either Windows 7 or Windows Vista, the majority (90%) of users have the game crash after the title screen. Since the marketshare for ATI is nearly equal to that of Nvidia, and the ATI logo is adorning the front page of the Saboteur website, it seems like quite a large mistake to release the game in its current state."

Comment Re:Answers (Score 5, Informative) 724

Just FYI, 32bit Intel processors from the Pentium Pro generation and forward (with the exception of most, if not all of the Pentium-M's) have 36 physical address pins or more?

Many, but not all, chipsets have a facility for breaking the physical address presentation of the system RAM into a configurably-sized contiguous block below the 4GB limit and then making the rest available above the 4GB limit. If you're curious, the register (in intel parlance) is often called TOLUD (Top of Low Useable DRAM).

Yes, furthermore, given modern OS designs on x86 architecture, a process cannot utilize more than 2gb (windows without /3gb boot option) or 3gb (linux, most BSDs, windows with /3gb and apps specially built to use the 3/1 instead of 2/2 split.)

However, that limitation does not preclude you from having a machine running eight processes using 2GB of physical memory each.

The processor feature is called PAE (Physical Address Extension). It works, basically, by adding an extra level of processor pagetable indirection.

Incidentally, I have a quad P3-700 (It's a Dell PowerEdge 6450) propping a door open that could support 8GB of RAM if you had enough registered, ECC PC-133 SDRAM to populate the sixteen dimm slots.

Anyways, here's a snippet from the beginning of a 32 bit machine running Linux which has 4GB of RAM:
[ 0.000000] BIOS-provided physical RAM map:
[ 0.000000] BIOS-e820: 0000000000000000 - 0000000000097c00 (usable)
[ 0.000000] BIOS-e820: 0000000000097c00 - 00000000000a0000 (reserved)
[ 0.000000] BIOS-e820: 00000000000e8000 - 0000000000100000 (reserved)
[ 0.000000] BIOS-e820: 0000000000100000 - 00000000defafe00 (usable)
[ 0.000000] BIOS-e820: 00000000defb1e00 - 00000000defb1ea0 (ACPI NVS)
[ 0.000000] BIOS-e820: 00000000defb1ea0 - 00000000e0000000 (reserved)
[ 0.000000] BIOS-e820: 00000000f4000000 - 00000000f8000000 (reserved)
[ 0.000000] BIOS-e820: 00000000fec00000 - 00000000fed40000 (reserved)
[ 0.000000] BIOS-e820: 00000000fed45000 - 0000000100000000 (reserved)
[ 0.000000] BIOS-e820: 0000000100000000 - 000000011c000000 (usable)

The title of that list should really be "Physical Address Space map." Either way, notice that the majority of the RAM is available up until 0xDEFAFE00 and the rest is available from 0x100000000 to 0x11c000000 - a range that's clearly above the 4GB limit.

Yes, it's running a bigmem kernel... But that's what bigmem kernels are for.

Oh, incidentally, even windows 2000 supported PAE. The bigger problem is the chipset. Not all of them support remapping a portion of RAM above 4GB.

The Media

Submission + - The Impact of Being a Gaming Parent

Anonymous Coward writes: "One woman speaks up and challenges the idea that video games are bad for children. Her short account of how video games have solidified her relationship with her son is a slap in the face for extremists like Jack Thompson. [url]http://www.2old2play.com/News/The_Impact_of_B eing_a_Gaming_Parent[/url]"

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