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Is Jax for Apple Silicon is still supported
Hi From https://developer.apple.com/metal/jax/ I checked all active workflows on https://github.com/jax-ml/jax and any open issues with tags Metal and seems in DEC 2025 the Jax maintainers have closed all issues citing No active development on Jax-metal and the project seems dead. We need to know how can we leverage Apple silicon for accelerated projects using popular academia library and tools . Is the JAX project still going to be supported or Apple has plans to bring something of tis own that might be platform agnostic . Thanks
Topic: Machine Learning & AI SubTopic: Create ML
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Reply to MacOS(Apple Silicon) IOKit driver for FPGA DMA transmission, kernel panic.
Using gen32IOVMSegments() will return kIOReturnMessageTooLarge. If I don't set the maximum value of 8M, the result will still be the same, so I think it may not be related to the maximum value. If you haven't already, take a look at my post here. I haven't checked the code to confirm, but I strongly suspect that calling gen32IOVMSegments with a mask of the wrong size (like 0xFFFFF000) will cause kIOReturnMessageTooLarge, as the true mask range you've specified (0x00000000FFFFF000) is too large to fit in 32 bits. Does Apple M silicon not allocate <=32-bit bus addresses to third-party PCIe devices (FPGA)? Quite the opposite. We've actually gone to considerable trouble to ensure that we COULD provide 32-bit addresses to the PCI bus. Quoting Address Translation on 64-Bit System Architectures: Apple solved the problem with address translation which “maps” blocks of memory into the 32-bit address space of a PCI device. In this scheme, the PCI device still sees a 4-gigabyte space, but t
Topic: App & System Services SubTopic: Drivers Tags:
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How can I create a more complex XPCPeerRequirement?
I have been updating some NSXPCConnection code in my macOS 26 app (not sandboxed) to use XPCSession and friends instead. And it is working well and the experience has been generally good. But I have run into a problem when using XPCSession.setPeerRequirement() which I really want to use. It works well when I use something simple like XPCPeerRequirement.isFromSameTeam() but I want to check some more requirements and also use the code from multiple apps (but same team). That is, I want to check for multiple identifiers and team ID and version (and perhaps also in the future that the certificate is a Developer ID). And previously I would use SecRequirementCreateWithString with an entitlement string conceptually like this: var entitlement = anchor apple generic and ( entitlement += identifier idA entitlement += or identifier idB entitlement += ) entitlement += and certificate leaf[subject.OU] = TeamID entitlement += # and info [CFBundleShortVersionString] >= 1.0# and it works just as it should when
Topic: Code Signing SubTopic: Entitlements Tags:
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Reply to App Review Rejection – Guideline 2.1: “Create PIN” Not Responsive on iPad (iPhone-Only App)
If your app has been rejected and you need help resolving the issue, consider taking advantage of one of the following support options available from App Review: Reply to the message from App Review in App Store Connect and request clarification. Request a call with an Apple representative to discuss the outcome of the review. Submit an appeal to the App Review Board if you believe your app follows the App Review Guidelines. Visit the Contact Us page on Apple Developer and select the App Review tile to learn more.
Topic: App Store Distribution & Marketing SubTopic: App Review
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Help with visionOS pushWindow issues requested
I first started using the SwiftUI pushWindow API in visionOS 26.2, and I've reported several bugs I discovered, listed below. Under certain circumstances, pushed window relationships may break, and this behavior affects all other apps, not just the app that caused the problem, until the next device reboot. In other cases, the system may crash and restart. (FB21287011) When a window presented with pushWindow is dismissed, its parent window reappears in the wrong location (FB21294645) Pinning a pushed window to a wall breaks pushWindow for all other apps on the system (FB21594646) pushWindow interacts poorly with the window bar close app option (FB21652261) If a window locked to a wall calls pushWindow, the original window becomes unlocked (FB21652271) If a window locked in place calls pushWindow and the pushed window is closed, the system freezes (FB21828413) pushWindow, UIApplication.open, and a dismissed immersive space result in multiple failures that require a device reboot (FB21840747) visionOS randomly f
Topic: Spatial Computing SubTopic: General Tags:
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Crash/Exception thrown in UITableView initialization stack
Hello, We are seeing an intermittent crash when initializing a base UITableView with Apple's [initWithFrame:style:] initializer. Crash stack: Role: Foreground OS Version: iOS 26.1 Exception Type: EXC_BREAKPOINT Exception Subtype: KERN_INVALID_ADDRESS EXC_BREAKPOINT: 0 libswiftCore.dylib +0x1358c0 _assertionFailure(_:_:file:line:flags:) 1 UIKitCore +0x1fdca0 0x188c26ca0 (0x188c26b20 + 384) 2 UIKitCore +0x1ffa60 0x188c28a60 (0x188c2890c + 340) 3 UIKitCore +0x2012d0 0x188c2a2d0 (0x188c2a1ec + 228) 4 UIKitCore +0x200f20 0x188c29f20 (0x188c29cac + 628) 5 UIKitCore +0x200428 0x188c29428 (0x188c29384 + 164) 6 UIKitCore +0x18af7f4 -[UITableMetricsAdapter _updateSharedSectionMetricsForListGeometry:] 7 UIKitCore +0x201da8 -[UITableMetricsAdapter tableBackgroundColor] 8 UIKitCore +0x1643a44 ___39-[UITableView _applyAppearanceDefaults]_block_invoke 9 UIKitCore +0x196f3d0 +[UIView _performSystemAppearanceModifications:] 10 UIKitCore +0x1643978 -[UITableView _applyAppearanceDefaults] 11 UIKitCore +0x202854 -[UITab
Topic: UI Frameworks SubTopic: UIKit Tags:
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Reply to Would Xcode work with models from AWS Bedrock?
Given Apple released a presser on this, I'm guessing there was no collab with AWS. There won't be any motivation to support it since they are 100% using anthropic keys internally. I'm sure there's a sandboxed binary of claude that would work perfectly fine, but Xcode is sitting in front gating it, most likely because they have no idea what we are even talking about.
Topic: Developer Tools & Services SubTopic: Xcode
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Reply to Error with guardrailViolation and underlyingErrors
Here are some debug tips we've seen work best, in order of what to try first: Make sure your macOS, Xcode, and other operating systems you're developing for all are on the exact same version >= 26.0. It's most important that Xcode and Mac have the same exact version number, since these asset issues typically arise from version mismatches. Settings > turn Apple Intelligence off > restart your Mac > turn Apple Intelligence back on to trigger re-download of assets Settings > make sure Siri is turned on and Apple Intelligence is turned on to ensure all assets are downloaded If all else fails, kindly file a feedback report and include all of your OS and Xcode version numbers, so we can debug your issue.
Topic: Machine Learning & AI SubTopic: Foundation Models Tags:
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Reply to UIApplication.canOpenURL not working without Safari
Thanks for your post and interesting on your comment about: Long press on the Safari icon and choose Remove app If you make the system avoid using Universal Links by telling how to handle the link. Since you mentioned universal links, make sure there's no conflict with any custom URL schemes defined in your app's . Universal links should ideally not interfere with opening URLs in a browser unless specifically set up to redirect to an app. 
Since you observed different behavior on iOS 26.0+, double-check whether this is related to a beta version or a specific OS bug. Review Apple's release notes or beta forums for any related issues and consider filing a bug report if necessary. Ensure you're testing on various devices and simulators, as sometimes configuration or environment-specific issues can cause unexpected behavior. But I’m wondering if you are disabling the link itself, you can see that on the swctutils file search for the link itself inside that file. Can you publish the results? I would like
Topic: UI Frameworks SubTopic: UIKit
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Reply to Apple's PCC + Foundation Models
Apologies for the delay! Please see our doc main page: https://developer.apple.com/documentation/foundationmodels The Foundation Models framework provides access to Apple’s on-device large language model that powers Apple Intelligence to help you perform intelligent tasks specific to your use case. This article from Apple says something similar: https://machinelearning.apple.com/research/apple-foundation-models-2025-updates The new Foundation Models framework gives access to developers to start creating their own reliable, production-quality generative AI features with the ~3B parameter on-device language model.
Topic: Machine Learning & AI SubTopic: Foundation Models
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App is "Ready for Distribution" still not in App Store
My app was reviewed and approved on Feb 3rd, and still does not show in app store. I have submitted a ticket to Apple Feb 3rd, and still have not received a reply. I get either 404, or this app is not available your country or region. This does it for me, and anyone I've asked to try it. This is very confusing - please someone help! https://apps.apple.com/us/app/exp-lights/id6758403863
Topic: App Store Distribution & Marketing SubTopic: App Review Tags:
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Reply to trapping specific standard system registers
Are there any plans to introduce its system registers to HVF’s EL2 support? We can't talk about The Future™ [1], but if you'd like to see this change I encourage you to file an enhancement request describing your requirements. Please post your bug number, just for the record. Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com [1] See tip 3 in Quinn's Top Ten DevForums Tips.
Topic: App & System Services SubTopic: Core OS Tags:
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Reply to com.apple.developer.payment-pass-provisioning missing in TestFlight build despite provisioning profile having it
Thanks for that dump. Much nicer! My reading of the stuff in your latest post suggests that you’re authorised to use the entitlement but you’re not actually claiming it. Remember that a provisioning profile acts an allowlist. It tells the system what entitlements you’re allowed to claim, but it doesn’t actually claim them. You actually claim entitlements in your app’s code signature. Note To learn more about how this works, see TN3125 Inside Code Signing: Provisioning Profiles. I usually debug problems like this by first confirming the nature of the problem: Instead of sending my app directly to App Store Connect, I export an archive. For example, when using Xcode’s organiser window I click Distribute App and then follow the Custom > App Store Connect > Export workflow. I then upload that archive using Transporter. Presuming that reproduces the problem, I unpack the archive by hand. See Unpacking Apple Archives. I can then dump the profile and the entitlements in the resulting app. The profile
Topic: Code Signing SubTopic: Entitlements Tags:
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